// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "pdf/instance.h"
#include <algorithm> // for min()
#define _USE_MATH_DEFINES // for M_PI
#include <cmath> // for log() and pow()
#include <math.h>
#include <list>
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "chrome/browser/chrome_page_zoom_constants.h"
#include "chrome/common/content_restriction.h"
#include "content/public/common/page_zoom.h"
#include "net/base/escape.h"
#include "pdf/draw_utils.h"
#include "pdf/number_image_generator.h"
#include "pdf/pdf.h"
#include "pdf/resource_consts.h"
#include "ppapi/c/dev/ppb_cursor_control_dev.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/private/ppp_pdf.h"
#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
#include "ppapi/cpp/core.h"
#include "ppapi/cpp/dev/font_dev.h"
#include "ppapi/cpp/dev/memory_dev.h"
#include "ppapi/cpp/dev/text_input_dev.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/point.h"
#include "ppapi/cpp/private/pdf.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/url_request_info.h"
#include "ui/events/keycodes/keyboard_codes.h"
#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#endif
namespace chrome_pdf {
struct ToolbarButtonInfo {
uint32 id;
Button::ButtonStyle style;
PP_ResourceImage normal;
PP_ResourceImage highlighted;
PP_ResourceImage pressed;
};
namespace {
// Uncomment following #define to enable thumbnails.
// #define ENABLE_THUMBNAILS
const uint32 kToolbarSplashTimeoutMs = 6000;
const uint32 kMessageTextColor = 0xFF575757;
const uint32 kMessageTextSize = 22;
const uint32 kProgressFadeTimeoutMs = 250;
const uint32 kProgressDelayTimeoutMs = 1000;
const uint32 kAutoScrollTimeoutMs = 50;
const double kAutoScrollFactor = 0.2;
// Javascript methods.
const char kJSAccessibility[] = "accessibility";
const char kJSDocumentLoadComplete[] = "documentLoadComplete";
const char kJSGetHeight[] = "getHeight";
const char kJSGetHorizontalScrollbarThickness[] =
"getHorizontalScrollbarThickness";
const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
const char kJSGetSelectedText[] = "getSelectedText";
const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
const char kJSGetWidth[] = "getWidth";
const char kJSGetZoomLevel[] = "getZoomLevel";
const char kJSGoToPage[] = "goToPage";
const char kJSGrayscale[] = "grayscale";
const char kJSLoadPreviewPage[] = "loadPreviewPage";
const char kJSOnLoad[] = "onload";
const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
const char kJSOnScroll[] = "onScroll";
const char kJSPageXOffset[] = "pageXOffset";
const char kJSPageYOffset[] = "pageYOffset";
const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
const char kJSReload[] = "reload";
const char kJSRemovePrintButton[] = "removePrintButton";
const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
const char kJSSendKeyEvent[] = "sendKeyEvent";
const char kJSSetPageNumbers[] = "setPageNumbers";
const char kJSSetPageXOffset[] = "setPageXOffset";
const char kJSSetPageYOffset[] = "setPageYOffset";
const char kJSSetZoomLevel[] = "setZoomLevel";
const char kJSZoomFitToHeight[] = "fitToHeight";
const char kJSZoomFitToWidth[] = "fitToWidth";
const char kJSZoomIn[] = "zoomIn";
const char kJSZoomOut[] = "zoomOut";
// URL reference parameters.
// For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
// document from Adobe.
const char kDelimiters[] = "#&";
const char kNamedDest[] = "nameddest";
const char kPage[] = "page";
const char kChromePrint[] = "chrome://print/";
// Dictionary Value key names for the document accessibility info
const char kAccessibleNumberOfPages[] = "numberOfPages";
const char kAccessibleLoaded[] = "loaded";
const char kAccessibleCopyable[] = "copyable";
const ToolbarButtonInfo kPDFToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
{ kSaveButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
{ kPrintButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
};
const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
{ kSaveButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
{ kPrintButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
};
const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
};
static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
pp::Var var;
void* object =
pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object)
var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
return var.Detach();
}
void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
void* object =
pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
Instance* obj_instance = static_cast<Instance*>(object);
switch (type) {
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
obj_instance->RotateClockwise();
break;
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
obj_instance->RotateCounterclockwise();
break;
}
}
}
const PPP_Pdf ppp_private = {
&GetLinkAtPosition,
&Transform
};
int ExtractPrintPreviewPageIndex(const std::string& src_url) {
// Sample |src_url| format: chrome://print/id/page_index/print.pdf
std::vector<std::string> url_substr;
base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
if (url_substr.size() != 3)
return -1;
if (url_substr[2] != "print.pdf")
return -1;
int page_index = 0;
if (!base::StringToInt(url_substr[1], &page_index))
return -1;
return page_index;
}
bool IsPrintPreviewUrl(const std::string& url) {
return url.substr(0, strlen(kChromePrint)) == kChromePrint;
}
void ScalePoint(float scale, pp::Point* point) {
point->set_x(static_cast<int>(point->x() * scale));
point->set_y(static_cast<int>(point->y() * scale));
}
void ScaleRect(float scale, pp::Rect* rect) {
int left = static_cast<int>(floorf(rect->x() * scale));
int top = static_cast<int>(floorf(rect->y() * scale));
int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
rect->SetRect(left, top, right - left, bottom - top);
}
template<class T>
T ClipToRange(T value, T lower_boundary, T upper_boundary) {
DCHECK(lower_boundary <= upper_boundary);
return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
}
} // namespace
Instance::Instance(PP_Instance instance)
: pp::InstancePrivate(instance),
pp::Find_Private(this),
pp::Printing_Dev(this),
pp::Selection_Dev(this),
pp::WidgetClient_Dev(this),
pp::Zoom_Dev(this),
cursor_(PP_CURSORTYPE_POINTER),
timer_pending_(false),
current_timer_id_(0),
zoom_(1.0),
device_scale_(1.0),
printing_enabled_(true),
hidpi_enabled_(false),
full_(IsFullFrame()),
zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
did_call_start_loading_(false),
is_autoscroll_(false),
scrollbar_thickness_(-1),
scrollbar_reserved_thickness_(-1),
current_tb_info_(NULL),
current_tb_info_size_(0),
paint_manager_(this, this, true),
delayed_progress_timer_id_(0),
first_paint_(true),
painted_first_page_(false),
show_page_indicator_(false),
document_load_state_(LOAD_STATE_LOADING),
preview_document_load_state_(LOAD_STATE_COMPLETE),
told_browser_about_unsupported_feature_(false),
print_preview_page_count_(0) {
loader_factory_.Initialize(this);
timer_factory_.Initialize(this);
form_factory_.Initialize(this);
callback_factory_.Initialize(this);
engine_.reset(PDFEngine::Create(this));
pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
AddPerInstanceObject(kPPPPdfInterface, this);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
}
Instance::~Instance() {
if (timer_pending_) {
timer_factory_.CancelAll();
timer_pending_ = false;
}
// The engine may try to access this instance during its destruction.
// Make sure this happens early while the instance is still intact.
engine_.reset();
RemovePerInstanceObject(kPPPPdfInterface, this);
}
bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
// For now, we hide HiDPI support behind a flag.
if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
hidpi_enabled_ = true;
printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
if (printing_enabled_) {
CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
} else {
CreateToolbar(kPDFNoPrintToolbarButtons,
arraysize(kPDFNoPrintToolbarButtons));
}
CreateProgressBar();
// Load autoscroll anchor image.
autoscroll_anchor_ =
CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
#ifdef ENABLE_THUMBNAILS
CreateThumbnails();
#endif
const char* url = NULL;
for (uint32_t i = 0; i < argc; ++i) {
if (strcmp(argn[i], "src") == 0) {
url = argv[i];
break;
}
}
if (!url)
return false;
CreatePageIndicator(IsPrintPreviewUrl(url));
if (!full_) {
// For PDFs embedded in a frame, we don't get the data automatically like we
// do for full-frame loads. Start loading the data manually.
LoadUrl(url);
} else {
DCHECK(!did_call_start_loading_);
pp::PDF::DidStartLoading(this);
did_call_start_loading_ = true;
}
ZoomLimitsChanged(kMinZoom, kMaxZoom);
text_input_.reset(new pp::TextInput_Dev(this));
url_ = url;
return engine_->New(url);
}
bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
kProgressDelayTimeoutMs);
return engine_->HandleDocumentLoad(loader);
}
bool Instance::HandleInputEvent(const pp::InputEvent& event) {
// To simplify things, convert the event into device coordinates if it is
// a mouse event.
pp::InputEvent event_device_res(event);
{
pp::MouseInputEvent mouse_event(event);
if (!mouse_event.is_null()) {
pp::Point point = mouse_event.GetPosition();
pp::Point movement = mouse_event.GetMovement();
ScalePoint(device_scale_, &point);
ScalePoint(device_scale_, &movement);
mouse_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
movement);
event_device_res = mouse_event;
}
}
// Check if we need to go to autoscroll mode.
if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
pp::MouseInputEvent mouse_event(event_device_res);
pp::Point pos = mouse_event.GetPosition();
EnableAutoscroll(pos);
UpdateCursor(CalculateAutoscroll(pos));
return true;
} else {
// Quit autoscrolling on any other event.
DisableAutoscroll();
}
#ifdef ENABLE_THUMBNAILS
if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
thumbnails_.SlideOut();
if (thumbnails_.HandleEvent(event_device_res))
return true;
#endif
if (toolbar_->HandleEvent(event_device_res))
return true;
#ifdef ENABLE_THUMBNAILS
if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
pp::MouseInputEvent mouse_event(event);
pp::Point pt = mouse_event.GetPosition();
pp::Rect v_scrollbar_rc;
v_scrollbar_->GetLocation(&v_scrollbar_rc);
// There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
// in the webkit that makes event.u.mouse.button
// equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
// To work around this issue we use modifier for now, and will switch
// to button once the bug is fixed and webkit got merged back to our tree.
if (v_scrollbar_rc.Contains(pt) &&
(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
thumbnails_.SlideIn();
}
// When scrollbar is in the scrolling mode we should display thumbnails
// even the mouse is outside the thumbnail and scrollbar areas.
// If mouse is outside plugin area, we are still getting mouse move events
// while scrolling. See bug description for details:
// http://code.google.com/p/chromium/issues/detail?id=56444
if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
!(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
!thumbnails_.rect().Contains(pt)) {
thumbnails_.SlideOut();
}
}
#endif
// Need to pass the event to the engine first, since if we're over an edit
// control we want it to get keyboard events (like space) instead of the
// scrollbar.
// TODO: will have to offset the mouse coordinates once we support bidi and
// there could be scrollbars on the left.
pp::InputEvent offset_event(event_device_res);
bool try_engine_first = true;
switch (offset_event.GetType()) {
case PP_INPUTEVENT_TYPE_MOUSEDOWN:
case PP_INPUTEVENT_TYPE_MOUSEUP:
case PP_INPUTEVENT_TYPE_MOUSEMOVE:
case PP_INPUTEVENT_TYPE_MOUSEENTER:
case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
pp::MouseInputEvent mouse_event(event_device_res);
pp::MouseInputEvent mouse_event_dip(event);
pp::Point point = mouse_event.GetPosition();
point.set_x(point.x() - available_area_.x());
offset_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
mouse_event.GetMovement());
if (!engine_->IsSelecting()) {
if (!IsOverlayScrollbar() &&
!available_area_.Contains(mouse_event.GetPosition())) {
try_engine_first = false;
} else if (IsOverlayScrollbar()) {
pp::Rect temp;
if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
temp.Contains(mouse_event_dip.GetPosition())) ||
(h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
temp.Contains(mouse_event_dip.GetPosition()))) {
try_engine_first = false;
}
}
}
break;
}
default:
break;
}
if (try_engine_first && engine_->HandleEvent(offset_event))
return true;
// Left/Right arrows should scroll to the beginning of the Prev/Next page if
// there is no horizontal scroll bar.
// If fit-to-height, PgDown/PgUp should scroll to the beginning of the
// Prev/Next page. Spacebar / shift+spacebar should do the same.
if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
pp::KeyboardInputEvent keyboard_event(event);
bool no_h_scrollbar = !h_scrollbar_.get();
uint32_t key_code = keyboard_event.GetKeyCode();
bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
bool has_shift =
keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
bool key_is_space = key_code == ui::VKEY_SPACE;
page_down |= key_is_space || key_code == ui::VKEY_NEXT;
page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
}
if (page_down) {
int page = engine_->GetFirstVisiblePage();
if (page == -1)
return true;
// Engine calculates visible page including delimiter to the page size.
// We need to check here if the page itself is completely out of view and
// scroll to the next one in that case.
if (engine_->GetPageRect(page).bottom() * zoom_ <=
v_scrollbar_->GetValue())
page++;
ScrollToPage(page + 1);
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
} else if (page_up) {
int page = engine_->GetFirstVisiblePage();
if (page == -1)
return true;
if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
page--;
ScrollToPage(page);
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
}
if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
if (timer_pending_ &&
(event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
timer_factory_.CancelAll();
timer_pending_ = false;
} else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
engine_->IsSelecting()) {
bool set_timer = false;
pp::MouseInputEvent mouse_event(event);
if (v_scrollbar_.get() &&
(mouse_event.GetPosition().y() <= 0 ||
mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
v_scrollbar_->ScrollBy(
PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
set_timer = true;
}
if (h_scrollbar_.get() &&
(mouse_event.GetPosition().x() <= 0 ||
mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
mouse_event.GetPosition().x() >= 0 ? 1: -1);
set_timer = true;
}
if (set_timer) {
last_mouse_event_ = pp::MouseInputEvent(event);
pp::CompletionCallback callback =
timer_factory_.NewCallback(&Instance::OnTimerFired);
pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
timer_pending_ = true;
}
}
if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
pp::KeyboardInputEvent keyboard_event(event);
const uint32 modifier = event.GetModifiers();
if (modifier & kDefaultKeyModifier) {
switch (keyboard_event.GetKeyCode()) {
case 'A':
engine_->SelectAll();
return true;
}
} else if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
switch (keyboard_event.GetKeyCode()) {
case ui::VKEY_OEM_4:
// Left bracket.
engine_->RotateCounterclockwise();
return true;
case ui::VKEY_OEM_6:
// Right bracket.
engine_->RotateClockwise();
return true;
}
}
}
// Return true for unhandled clicks so the plugin takes focus.
return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
}
void Instance::DidChangeView(const pp::View& view) {
pp::Rect view_rect(view.GetRect());
float device_scale = 1.0f;
float old_device_scale = device_scale_;
if (hidpi_enabled_)
device_scale = view.GetDeviceScale();
pp::Size view_device_size(view_rect.width() * device_scale,
view_rect.height() * device_scale);
if (view_device_size == plugin_size_ && device_scale == device_scale_)
return; // We don't care about the position, only the size.
image_data_ = pp::ImageData();
device_scale_ = device_scale;
plugin_dip_size_ = view_rect.size();
plugin_size_ = view_device_size;
paint_manager_.SetSize(view_device_size, device_scale_);
image_data_ = pp::ImageData(this,
PP_IMAGEDATAFORMAT_BGRA_PREMUL,
plugin_size_,
false);
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
// View dimensions changed, disable autoscroll (if it was enabled).
DisableAutoscroll();
OnGeometryChanged(zoom_, old_device_scale);
}
pp::Var Instance::GetInstanceObject() {
if (instance_object_.is_undefined()) {
PDFScriptableObject* object = new PDFScriptableObject(this);
// The pp::Var takes ownership of object here.
instance_object_ = pp::VarPrivate(this, object);
}
return instance_object_;
}
pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
pp::Point offset_point(point);
ScalePoint(device_scale_, &offset_point);
offset_point.set_x(offset_point.x() - available_area_.x());
return engine_->GetLinkAtPosition(offset_point);
}
pp::Var Instance::GetSelectedText(bool html) {
if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
return pp::Var();
return engine_->GetSelectedText();
}
void Instance::InvalidateWidget(pp::Widget_Dev widget,
const pp::Rect& dirty_rect) {
if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
if (!image_data_.is_null())
v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
} else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
if (!image_data_.is_null())
h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
} else {
// Possible to hit this condition since sometimes the scrollbar codes posts
// a task to do something later, and we could have deleted our reference in
// the meantime.
return;
}
pp::Rect dirty_rect_scaled = dirty_rect;
ScaleRect(device_scale_, &dirty_rect_scaled);
paint_manager_.InvalidateRect(dirty_rect_scaled);
}
void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
uint32_t value) {
value = GetScaled(value);
if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
engine_->ScrolledToYPosition(value);
pp::Rect rc;
v_scrollbar_->GetLocation(&rc);
int32 doc_height = GetDocumentPixelHeight();
doc_height -= GetScaled(rc.height());
#ifdef ENABLE_THUMBNAILS
if (thumbnails_.visible()) {
thumbnails_.SetPosition(value, doc_height, true);
}
#endif
pp::Point origin(
plugin_size_.width() - page_indicator_.rect().width() -
GetScaled(GetScrollbarReservedThickness()),
page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
page_indicator_.MoveTo(origin, page_indicator_.visible());
} else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
engine_->ScrolledToXPosition(value);
}
}
void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
bool overlay) {
scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
OnGeometryChanged(zoom_, device_scale_);
}
uint32_t Instance::QuerySupportedPrintOutputFormats() {
return engine_->QuerySupportedPrintOutputFormats();
}
int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
// For us num_pages is always equal to the number of pages in the PDF
// document irrespective of the printable area.
int32_t ret = engine_->GetNumberOfPages();
if (!ret)
return 0;
uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
if ((print_settings.format & supported_formats) == 0)
return 0;
print_settings_.is_printing = true;
print_settings_.pepper_print_settings = print_settings;
engine_->PrintBegin();
return ret;
}
pp::Resource Instance::PrintPages(
const PP_PrintPageNumberRange_Dev* page_ranges,
uint32_t page_range_count) {
if (!print_settings_.is_printing)
return pp::Resource();
print_settings_.print_pages_called_ = true;
return engine_->PrintPages(page_ranges, page_range_count,
print_settings_.pepper_print_settings);
}
void Instance::PrintEnd() {
if (print_settings_.print_pages_called_)
UserMetricsRecordAction("PDF.PrintPage");
print_settings_.Clear();
engine_->PrintEnd();
}
bool Instance::IsPrintScalingDisabled() {
return !engine_->GetPrintScaling();
}
bool Instance::StartFind(const std::string& text, bool case_sensitive) {
engine_->StartFind(text.c_str(), case_sensitive);
return true;
}
void Instance::SelectFindResult(bool forward) {
engine_->SelectFindResult(forward);
}
void Instance::StopFind() {
engine_->StopFind();
}
void Instance::Zoom(double scale, bool text_only) {
UserMetricsRecordAction("PDF.ZoomFromBrowser");
SetZoom(ZOOM_SCALE, scale);
}
void Instance::ZoomChanged(double factor) {
if (full_)
Zoom_Dev::ZoomChanged(factor);
}
void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
std::vector<PaintManager::ReadyRect>* ready,
std::vector<pp::Rect>* pending) {
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
if (first_paint_) {
first_paint_ = false;
pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
FillRect(rect, kBackgroundColor);
ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
*pending = paint_rects;
return;
}
engine_->PrePaint();
for (size_t i = 0; i < paint_rects.size(); i++) {
// Intersect with plugin area since there could be pending invalidates from
// when the plugin area was larger.
pp::Rect rect =
paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
if (rect.IsEmpty())
continue;
pp::Rect pdf_rect = available_area_.Intersect(rect);
if (!pdf_rect.IsEmpty()) {
pdf_rect.Offset(available_area_.x() * -1, 0);
std::vector<pp::Rect> pdf_ready;
std::vector<pp::Rect> pdf_pending;
engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
for (size_t j = 0; j < pdf_ready.size(); ++j) {
pdf_ready[j].Offset(available_area_.point());
ready->push_back(
PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
}
for (size_t j = 0; j < pdf_pending.size(); ++j) {
pdf_pending[j].Offset(available_area_.point());
pending->push_back(pdf_pending[j]);
}
}
for (size_t j = 0; j < background_parts_.size(); ++j) {
pp::Rect intersection = background_parts_[j].location.Intersect(rect);
if (!intersection.IsEmpty()) {
FillRect(intersection, background_parts_[j].color);
ready->push_back(
PaintManager::ReadyRect(intersection, image_data_, false));
}
}
if (document_load_state_ == LOAD_STATE_FAILED) {
pp::Point top_center;
top_center.set_x(plugin_size_.width() / 2);
top_center.set_y(plugin_size_.height() / 2);
DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
}
#ifdef ENABLE_THUMBNAILS
thumbnails_.Paint(&image_data_, rect);
#endif
}
engine_->PostPaint();
// Must paint scrollbars after the background parts, in case we have an
// overlay scrollbar that's over the background. We also do this in a separate
// loop because the scrollbar painting logic uses the signal of whether there
// are pending paints or not to figure out if it should draw right away or
// not.
for (size_t i = 0; i < paint_rects.size(); i++) {
PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
}
if (progress_bar_.visible())
PaintOverlayControl(&progress_bar_, &image_data_, ready);
if (page_indicator_.visible())
PaintOverlayControl(&page_indicator_, &image_data_, ready);
if (toolbar_->current_transparency() != kTransparentAlpha)
PaintOverlayControl(toolbar_.get(), &image_data_, ready);
// Paint autoscroll anchor if needed.
if (is_autoscroll_) {
size_t limit = ready->size();
for (size_t i = 0; i < limit; i++) {
pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
if (!anchor_rect.IsEmpty()) {
pp::Rect draw_rc = pp::Rect(
pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
anchor_rect.y() - autoscroll_rect_.y()),
anchor_rect.size());
// Paint autoscroll anchor.
AlphaBlend(autoscroll_anchor_, draw_rc,
&image_data_, anchor_rect.point(), kOpaqueAlpha);
}
}
}
}
void Instance::PaintOverlayControl(
Control* ctrl,
pp::ImageData* image_data,
std::vector<PaintManager::ReadyRect>* ready) {
// Make sure that we only paint overlay controls over an area that's ready,
// i.e. not pending. Otherwise we'll mark the control rect as ready and
// it'll overwrite the pdf region.
std::list<pp::Rect> ctrl_rects;
for (size_t i = 0; i < ready->size(); i++) {
pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
if (!rc.IsEmpty())
ctrl_rects.push_back(rc);
}
if (!ctrl_rects.empty()) {
ctrl->PaintMultipleRects(image_data, ctrl_rects);
std::list<pp::Rect>::iterator iter;
for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
}
}
}
void Instance::DidOpen(int32_t result) {
if (result == PP_OK) {
engine_->HandleDocumentLoad(embed_loader_);
} else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
NOTREACHED();
}
}
void Instance::DidOpenPreview(int32_t result) {
if (result == PP_OK) {
preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
preview_engine_->HandleDocumentLoad(embed_preview_loader_);
} else {
NOTREACHED();
}
}
void Instance::PaintIfWidgetIntersects(
pp::Widget_Dev* widget,
const pp::Rect& rect,
std::vector<PaintManager::ReadyRect>* ready,
std::vector<pp::Rect>* pending) {
if (!widget)
return;
pp::Rect location;
if (!widget->GetLocation(&location))
return;
ScaleRect(device_scale_, &location);
location = location.Intersect(rect);
if (location.IsEmpty())
return;
if (IsOverlayScrollbar()) {
// If we're using overlay scrollbars, and there are pending paints under the
// scrollbar, don't update the scrollbar instantly. While it would be nice,
// we would need to double buffer the plugin area in order to make this
// work. This is because we'd need to always have a copy of what the pdf
// under the scrollbar looks like, and additionally we couldn't paint the
// pdf under the scrollbar if it's ready until we got the preceding flush.
// So in practice, it would make painting slower and introduce extra buffer
// copies for the general case.
for (size_t i = 0; i < pending->size(); ++i) {
if ((*pending)[i].Intersects(location))
return;
}
// Even if none of the pending paints are under the scrollbar, we never want
// to paint it if it's over the pdf if there are other pending paints.
// Otherwise different parts of the pdf plugin would display at different
// scroll offsets.
if (!pending->empty() && available_area_.Intersects(rect)) {
pending->push_back(location);
return;
}
}
pp::Rect location_dip = location;
ScaleRect(1.0f / device_scale_, &location_dip);
DCHECK(!image_data_.is_null());
widget->Paint(location_dip, &image_data_);
ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
}
void Instance::OnTimerFired(int32_t) {
HandleInputEvent(last_mouse_event_);
}
void Instance::OnClientTimerFired(int32_t id) {
engine_->OnCallback(id);
}
void Instance::OnControlTimerFired(int32_t,
const uint32& control_id,
const uint32& timer_id) {
if (control_id == toolbar_->id()) {
toolbar_->OnTimerFired(timer_id);
} else if (control_id == progress_bar_.id()) {
if (timer_id == delayed_progress_timer_id_) {
if (document_load_state_ == LOAD_STATE_LOADING &&
!progress_bar_.visible()) {
progress_bar_.Fade(true, kProgressFadeTimeoutMs);
}
delayed_progress_timer_id_ = 0;
} else {
progress_bar_.OnTimerFired(timer_id);
}
} else if (control_id == kAutoScrollId) {
if (is_autoscroll_) {
if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
}
if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
}
// Reschedule timer.
ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
}
} else if (control_id == kPageIndicatorId) {
page_indicator_.OnTimerFired(timer_id);
}
#ifdef ENABLE_THUMBNAILS
else if (control_id == thumbnails_.id()) {
thumbnails_.OnTimerFired(timer_id);
}
#endif
}
void Instance::CalculateBackgroundParts() {
background_parts_.clear();
int v_scrollbar_thickness =
GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
int h_scrollbar_thickness =
GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
int width_without_scrollbar = std::max(
plugin_size_.width() - v_scrollbar_thickness, 0);
int height_without_scrollbar = std::max(
plugin_size_.height() - h_scrollbar_thickness, 0);
int left_width = available_area_.x();
int right_start = available_area_.right();
int right_width = abs(width_without_scrollbar - available_area_.right());
int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
// Add the left, right, and bottom rectangles. Note: we assume only
// horizontal centering.
BackgroundPart part = {
pp::Rect(0, 0, left_width, bottom),
kBackgroundColor
};
if (!part.location.IsEmpty())
background_parts_.push_back(part);
part.location = pp::Rect(right_start, 0, right_width, bottom);
if (!part.location.IsEmpty())
background_parts_.push_back(part);
part.location = pp::Rect(
0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
if (!part.location.IsEmpty())
background_parts_.push_back(part);
if (h_scrollbar_thickness
#if defined(OS_MACOSX)
||
#else
&&
#endif
v_scrollbar_thickness) {
part.color = 0xFFFFFFFF;
part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
plugin_size_.height() - h_scrollbar_thickness,
h_scrollbar_thickness,
v_scrollbar_thickness);
background_parts_.push_back(part);
}
}
int Instance::GetDocumentPixelWidth() const {
return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
}
int Instance::GetDocumentPixelHeight() const {
return static_cast<int>(ceil(document_size_.height() *
zoom_ *
device_scale_));
}
void Instance::FillRect(const pp::Rect& rect, uint32 color) {
DCHECK(!image_data_.is_null() || rect.IsEmpty());
uint32* buffer_start = static_cast<uint32*>(image_data_.data());
int stride = image_data_.stride();
uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
int height = rect.height();
int width = rect.width();
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x)
*(ptr + x) = color;
ptr += stride / 4;
}
}
void Instance::DocumentSizeUpdated(const pp::Size& size) {
document_size_ = size;
OnGeometryChanged(zoom_, device_scale_);
}
void Instance::Invalidate(const pp::Rect& rect) {
pp::Rect offset_rect(rect);
offset_rect.Offset(available_area_.point());
paint_manager_.InvalidateRect(offset_rect);
}
void Instance::Scroll(const pp::Point& point) {
pp::Rect scroll_area = available_area_;
if (IsOverlayScrollbar()) {
pp::Rect rc;
if (h_scrollbar_.get()) {
h_scrollbar_->GetLocation(&rc);
ScaleRect(device_scale_, &rc);
if (scroll_area.bottom() > rc.y()) {
scroll_area.set_height(rc.y() - scroll_area.y());
paint_manager_.InvalidateRect(rc);
}
}
if (v_scrollbar_.get()) {
v_scrollbar_->GetLocation(&rc);
ScaleRect(device_scale_, &rc);
if (scroll_area.right() > rc.x()) {
scroll_area.set_width(rc.x() - scroll_area.x());
paint_manager_.InvalidateRect(rc);
}
}
}
paint_manager_.ScrollRect(scroll_area, point);
if (toolbar_->current_transparency() != kTransparentAlpha)
paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
if (progress_bar_.visible())
paint_manager_.InvalidateRect(progress_bar_.rect());
if (is_autoscroll_)
paint_manager_.InvalidateRect(autoscroll_rect_);
if (show_page_indicator_) {
page_indicator_.set_current_page(GetPageNumberToDisplay());
page_indicator_.Splash();
}
if (page_indicator_.visible())
paint_manager_.InvalidateRect(page_indicator_.rect());
// Run the scroll callback asynchronously. This function can be invoked by a
// layout change which should not re-enter into JS synchronously.
pp::CompletionCallback callback =
callback_factory_.NewCallback(&Instance::RunCallback,
on_scroll_callback_);
pp::Module::Get()->core()->CallOnMainThread(0, callback);
}
void Instance::ScrollToX(int position) {
if (!h_scrollbar_.get()) {
NOTREACHED();
return;
}
int position_dip = static_cast<int>(position / device_scale_);
h_scrollbar_->SetValue(position_dip);
}
void Instance::ScrollToY(int position) {
if (!v_scrollbar_.get()) {
NOTREACHED();
return;
}
int position_dip = static_cast<int>(position / device_scale_);
v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
}
void Instance::ScrollToPage(int page) {
if (!v_scrollbar_.get())
return;
if (engine_->GetNumberOfPages() == 0)
return;
int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
pp::Rect rect = engine_->GetPageRect(index);
// If we are trying to scroll pass the last page,
// scroll to the end of the last page.
int position = index < page ? rect.bottom() : rect.y();
ScrollToY(position * zoom_ * device_scale_);
}
void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
std::string url_copy(url);
// Empty |url_copy| is ok, and will effectively be a reload.
// Skip the code below so an empty URL does not turn into "http://", which
// will cause GURL to fail a DCHECK.
if (!url_copy.empty()) {
// If |url_copy| starts with '#', then it's for the same URL with a
// different URL fragment.
if (url_copy[0] == '#') {
url_copy = url_ + url_copy;
// Changing the href does not actually do anything when navigating in the
// same tab, so do the actual page scroll here. Then fall through so the
// href gets updated.
if (!open_in_new_tab) {
int page_number = GetInitialPage(url_copy);
if (page_number >= 0)
ScrollToPage(page_number);
}
}
// If there's no scheme, add http.
if (url_copy.find("://") == std::string::npos &&
url_copy.find("mailto:") == std::string::npos) {
url_copy = "http://" + url_copy;
}
// Make sure |url_copy| starts with a valid scheme.
if (url_copy.find("http://") != 0 &&
url_copy.find("https://") != 0 &&
url_copy.find("ftp://") != 0 &&
url_copy.find("file://") != 0 &&
url_copy.find("mailto:") != 0) {
return;
}
// Make sure |url_copy| is not only a scheme.
if (url_copy == "http://" ||
url_copy == "https://" ||
url_copy == "ftp://" ||
url_copy == "file://" ||
url_copy == "mailto:") {
return;
}
}
if (open_in_new_tab) {
GetWindowObject().Call("open", url_copy);
} else {
GetWindowObject().GetProperty("top").GetProperty("location").
SetProperty("href", url_copy);
}
}
void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
if (cursor == cursor_)
return;
cursor_ = cursor;
const PPB_CursorControl_Dev* cursor_interface =
reinterpret_cast<const PPB_CursorControl_Dev*>(
pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
if (!cursor_interface) {
NOTREACHED();
return;
}
cursor_interface->SetCursor(
pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
}
void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
if (!v_scrollbar_.get())
return;
float inverse_scale = 1.0f / device_scale_;
std::vector<pp::Rect> scaled_tickmarks = tickmarks;
for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
ScaleRect(inverse_scale, &scaled_tickmarks[i]);
}
v_scrollbar_->SetTickMarks(
scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
}
void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
NumberOfFindResultsChanged(total, final_result);
}
void Instance::NotifySelectedFindResultChanged(int current_find_index) {
SelectedFindResultChanged(current_find_index);
}
void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
switch (control_id) {
case kFitToPageButtonId:
UserMetricsRecordAction("PDF.FitToPageButton");
SetZoom(ZOOM_FIT_TO_PAGE, 0);
ZoomChanged(zoom_);
break;
case kFitToWidthButtonId:
UserMetricsRecordAction("PDF.FitToWidthButton");
SetZoom(ZOOM_FIT_TO_WIDTH, 0);
ZoomChanged(zoom_);
break;
case kZoomOutButtonId:
case kZoomInButtonId:
UserMetricsRecordAction(control_id == kZoomOutButtonId ?
"PDF.ZoomOutButton" : "PDF.ZoomInButton");
SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
ZoomChanged(zoom_);
break;
case kSaveButtonId:
UserMetricsRecordAction("PDF.SaveButton");
SaveAs();
break;
case kPrintButtonId:
UserMetricsRecordAction("PDF.PrintButton");
Print();
break;
}
}
if (control_id == kThumbnailsId &&
event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
int page = *static_cast<int*>(data);
pp::Rect page_rc(engine_->GetPageRect(page));
ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
}
}
void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
paint_manager_.InvalidateRect(rc);
}
uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
current_timer_id_++;
pp::CompletionCallback callback =
timer_factory_.NewCallback(&Instance::OnControlTimerFired,
control_id,
current_timer_id_);
pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
return current_timer_id_;
}
void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
// TODO(gene): set event capture here.
}
void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
UpdateCursor(cursor_type);
}
pp::Instance* Instance::GetInstance() {
return this;
}
void Instance::GetDocumentPassword(
pp::CompletionCallbackWithOutput<pp::Var> callback) {
std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
*callback.output() = result.pp_var();
callback.Run(PP_OK);
}
void Instance::Alert(const std::string& message) {
GetWindowObject().Call("alert", message);
}
bool Instance::Confirm(const std::string& message) {
pp::Var result = GetWindowObject().Call("confirm", message);
return result.is_bool() ? result.AsBool() : false;
}
std::string Instance::Prompt(const std::string& question,
const std::string& default_answer) {
pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
return result.is_string() ? result.AsString() : std::string();
}
std::string Instance::GetURL() {
return url_;
}
void Instance::Email(const std::string& to,
const std::string& cc,
const std::string& bcc,
const std::string& subject,
const std::string& body) {
std::string javascript =
"var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
"?cc=" + net::EscapeUrlEncodedData(cc, false) +
"&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
"&subject=" + net::EscapeUrlEncodedData(subject, false) +
"&body=" + net::EscapeUrlEncodedData(body, false) +
"';var temp = window.open(href, '_blank', " +
"'width=1,height=1');if(temp) temp.close();";
ExecuteScript(javascript);
}
void Instance::Print() {
if (!printing_enabled_ ||
(!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
return;
}
pp::CompletionCallback callback =
callback_factory_.NewCallback(&Instance::OnPrint);
pp::Module::Get()->core()->CallOnMainThread(0, callback);
}
void Instance::OnPrint(int32_t) {
pp::PDF::Print(this);
}
void Instance::SaveAs() {
pp::PDF::SaveAs(this);
}
void Instance::SubmitForm(const std::string& url,
const void* data,
int length) {
pp::URLRequestInfo request(this);
request.SetURL(url);
request.SetMethod("POST");
request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
pp::CompletionCallback callback =
form_factory_.NewCallback(&Instance::FormDidOpen);
form_loader_ = CreateURLLoaderInternal();
int rv = form_loader_.Open(request, callback);
if (rv != PP_OK_COMPLETIONPENDING)
callback.Run(rv);
}
void Instance::FormDidOpen(int32_t result) {
// TODO: inform the user of success/failure.
if (result != PP_OK) {
NOTREACHED();
}
}
std::string Instance::ShowFileSelectionDialog() {
// Seems like very low priority to implement, since the pdf has no way to get
// the file data anyways. Javascript doesn't let you do this synchronously.
NOTREACHED();
return std::string();
}
pp::URLLoader Instance::CreateURLLoader() {
if (full_) {
if (!did_call_start_loading_) {
did_call_start_loading_ = true;
pp::PDF::DidStartLoading(this);
}
// Disable save and print until the document is fully loaded, since they
// would generate an incomplete document. Need to do this each time we
// call DidStartLoading since that resets the content restrictions.
pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
CONTENT_RESTRICTION_PRINT);
}
return CreateURLLoaderInternal();
}
void Instance::ScheduleCallback(int id, int delay_in_ms) {
pp::CompletionCallback callback =
timer_factory_.NewCallback(&Instance::OnClientTimerFired);
pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
}
void Instance::SearchString(const base::char16* string,
const base::char16* term,
bool case_sensitive,
std::vector<SearchStringResult>* results) {
if (!pp::PDF::IsAvailable()) {
NOTREACHED();
return;
}
PP_PrivateFindResult* pp_results;
int count = 0;
pp::PDF::SearchString(
this,
reinterpret_cast<const unsigned short*>(string),
reinterpret_cast<const unsigned short*>(term),
case_sensitive,
&pp_results,
&count);
results->resize(count);
for (int i = 0; i < count; ++i) {
(*results)[i].start_index = pp_results[i].start_index;
(*results)[i].length = pp_results[i].length;
}
pp::Memory_Dev memory;
memory.MemFree(pp_results);
}
void Instance::DocumentPaintOccurred() {
if (painted_first_page_)
return;
painted_first_page_ = true;
UpdateToolbarPosition(false);
toolbar_->Splash(kToolbarSplashTimeoutMs);
if (engine_->GetNumberOfPages() > 1)
show_page_indicator_ = true;
else
show_page_indicator_ = false;
if (v_scrollbar_.get() && show_page_indicator_) {
page_indicator_.set_current_page(GetPageNumberToDisplay());
page_indicator_.Splash(kToolbarSplashTimeoutMs,
kPageIndicatorInitialFadeTimeoutMs);
}
}
void Instance::DocumentLoadComplete(int page_count) {
// Clear focus state for OSK.
FormTextFieldFocusChange(false);
// Update progress control.
if (progress_bar_.visible())
progress_bar_.Fade(false, kProgressFadeTimeoutMs);
DCHECK(document_load_state_ == LOAD_STATE_LOADING);
document_load_state_ = LOAD_STATE_COMPLETE;
UserMetricsRecordAction("PDF.LoadSuccess");
if (did_call_start_loading_) {
pp::PDF::DidStopLoading(this);
did_call_start_loading_ = false;
}
if (on_load_callback_.is_string())
ExecuteScript(on_load_callback_);
// Note: If we are in print preview mode on_load_callback_ might call
// ScrollTo{X|Y}() and we don't want to scroll again and override it.
// #page=N is not supported in Print Preview.
if (!IsPrintPreview()) {
int initial_page = GetInitialPage(url_);
if (initial_page >= 0)
ScrollToPage(initial_page);
}
if (!full_)
return;
if (!pp::PDF::IsAvailable())
return;
int content_restrictions =
CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
content_restrictions |= CONTENT_RESTRICTION_COPY;
if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
printing_enabled_ = false;
if (current_tb_info_ == kPDFToolbarButtons) {
// Remove Print button.
CreateToolbar(kPDFNoPrintToolbarButtons,
arraysize(kPDFNoPrintToolbarButtons));
UpdateToolbarPosition(false);
Invalidate(pp::Rect(plugin_size_));
}
}
pp::PDF::SetContentRestriction(this, content_restrictions);
pp::PDF::HistogramPDFPageCount(this, page_count);
}
void Instance::RotateClockwise() {
engine_->RotateClockwise();
}
void Instance::RotateCounterclockwise() {
engine_->RotateCounterclockwise();
}
void Instance::PreviewDocumentLoadComplete() {
if (preview_document_load_state_ != LOAD_STATE_LOADING ||
preview_pages_info_.empty()) {
return;
}
preview_document_load_state_ = LOAD_STATE_COMPLETE;
int dest_page_index = preview_pages_info_.front().second;
int src_page_index =
ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
engine_->AppendPage(preview_engine_.get(), dest_page_index);
preview_pages_info_.pop();
// |print_preview_page_count_| is not updated yet. Do not load any
// other preview pages till we get this information.
if (print_preview_page_count_ == 0)
return;
if (preview_pages_info_.size())
LoadAvailablePreviewPage();
}
void Instance::DocumentLoadFailed() {
DCHECK(document_load_state_ == LOAD_STATE_LOADING);
UserMetricsRecordAction("PDF.LoadFailure");
// Hide progress control.
progress_bar_.Fade(false, kProgressFadeTimeoutMs);
if (did_call_start_loading_) {
pp::PDF::DidStopLoading(this);
did_call_start_loading_ = false;
}
document_load_state_ = LOAD_STATE_FAILED;
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
}
void Instance::PreviewDocumentLoadFailed() {
UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
if (preview_document_load_state_ != LOAD_STATE_LOADING ||
preview_pages_info_.empty()) {
return;
}
preview_document_load_state_ = LOAD_STATE_FAILED;
preview_pages_info_.pop();
if (preview_pages_info_.size())
LoadAvailablePreviewPage();
}
pp::Instance* Instance::GetPluginInstance() {
return GetInstance();
}
void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
std::string metric("PDF_Unsupported_");
metric += feature;
if (!unsupported_features_reported_.count(metric)) {
unsupported_features_reported_.insert(metric);
UserMetricsRecordAction(metric);
}
// Since we use an info bar, only do this for full frame plugins..
if (!full_)
return;
if (told_browser_about_unsupported_feature_)
return;
told_browser_about_unsupported_feature_ = true;
pp::PDF::HasUnsupportedFeature(this);
}
void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
double progress = 0.0;
if (doc_size == 0) {
// Document size is unknown. Use heuristics.
// We'll make progress logarithmic from 0 to 100M.
static const double kFactor = log(100000000.0) / 100.0;
if (available > 0) {
progress = log(static_cast<double>(available)) / kFactor;
if (progress > 100.0)
progress = 100.0;
}
} else {
progress = 100.0 * static_cast<double>(available) / doc_size;
}
progress_bar_.SetProgress(progress);
}
void Instance::FormTextFieldFocusChange(bool in_focus) {
if (!text_input_.get())
return;
if (in_focus)
text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
else
text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
}
// Called by PDFScriptableObject.
bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
std::string method_str = method.AsString();
return (method_str == kJSAccessibility ||
method_str == kJSDocumentLoadComplete ||
method_str == kJSGetHeight ||
method_str == kJSGetHorizontalScrollbarThickness ||
method_str == kJSGetPageLocationNormalized ||
method_str == kJSGetSelectedText ||
method_str == kJSGetVerticalScrollbarThickness ||
method_str == kJSGetWidth ||
method_str == kJSGetZoomLevel ||
method_str == kJSGoToPage ||
method_str == kJSGrayscale ||
method_str == kJSLoadPreviewPage ||
method_str == kJSOnLoad ||
method_str == kJSOnPluginSizeChanged ||
method_str == kJSOnScroll ||
method_str == kJSPageXOffset ||
method_str == kJSPageYOffset ||
method_str == kJSPrintPreviewPageCount ||
method_str == kJSReload ||
method_str == kJSRemovePrintButton ||
method_str == kJSResetPrintPreviewUrl ||
method_str == kJSSendKeyEvent ||
method_str == kJSSetPageNumbers ||
method_str == kJSSetPageXOffset ||
method_str == kJSSetPageYOffset ||
method_str == kJSSetZoomLevel ||
method_str == kJSZoomFitToHeight ||
method_str == kJSZoomFitToWidth ||
method_str == kJSZoomIn ||
method_str == kJSZoomOut);
}
pp::Var Instance::CallScriptableMethod(const pp::Var& method,
const std::vector<pp::Var>& args,
pp::Var* exception) {
std::string method_str = method.AsString();
if (method_str == kJSGrayscale) {
if (args.size() == 1 && args[0].is_bool()) {
engine_->SetGrayscale(args[0].AsBool());
// Redraw
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
#ifdef ENABLE_THUMBNAILS
if (thumbnails_.visible())
thumbnails_.Show(true, true);
#endif
return pp::Var(true);
}
return pp::Var(false);
}
if (method_str == kJSOnLoad) {
if (args.size() == 1 && args[0].is_string()) {
on_load_callback_ = args[0];
return pp::Var(true);
}
return pp::Var(false);
}
if (method_str == kJSOnScroll) {
if (args.size() == 1 && args[0].is_string()) {
on_scroll_callback_ = args[0];
return pp::Var(true);
}
return pp::Var(false);
}
if (method_str == kJSOnPluginSizeChanged) {
if (args.size() == 1 && args[0].is_string()) {
on_plugin_size_changed_callback_ = args[0];
return pp::Var(true);
}
return pp::Var(false);
}
if (method_str == kJSReload) {
document_load_state_ = LOAD_STATE_LOADING;
if (!full_)
LoadUrl(url_);
preview_engine_.reset();
print_preview_page_count_ = 0;
engine_.reset(PDFEngine::Create(this));
engine_->New(url_.c_str());
#ifdef ENABLE_THUMBNAILS
thumbnails_.ResetEngine(engine_.get());
#endif
return pp::Var();
}
if (method_str == kJSResetPrintPreviewUrl) {
if (args.size() == 1 && args[0].is_string()) {
url_ = args[0].AsString();
preview_pages_info_ = std::queue<PreviewPageInfo>();
preview_document_load_state_ = LOAD_STATE_COMPLETE;
}
return pp::Var();
}
if (method_str == kJSZoomFitToHeight) {
SetZoom(ZOOM_FIT_TO_PAGE, 0);
return pp::Var();
}
if (method_str == kJSZoomFitToWidth) {
SetZoom(ZOOM_FIT_TO_WIDTH, 0);
return pp::Var();
}
if (method_str == kJSZoomIn) {
SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
return pp::Var();
}
if (method_str == kJSZoomOut) {
SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
return pp::Var();
}
if (method_str == kJSSetZoomLevel) {
if (args.size() == 1 && args[0].is_number())
SetZoom(ZOOM_SCALE, args[0].AsDouble());
return pp::Var();
}
if (method_str == kJSGetZoomLevel) {
return pp::Var(zoom_);
}
if (method_str == kJSGetHeight) {
return pp::Var(plugin_size_.height());
}
if (method_str == kJSGetWidth) {
return pp::Var(plugin_size_.width());
}
if (method_str == kJSGetHorizontalScrollbarThickness) {
return pp::Var(
h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
}
if (method_str == kJSGetVerticalScrollbarThickness) {
return pp::Var(
v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
}
if (method_str == kJSGetSelectedText) {
return GetSelectedText(false);
}
if (method_str == kJSDocumentLoadComplete) {
return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
}
if (method_str == kJSPageYOffset) {
return pp::Var(static_cast<int32_t>(
v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
}
if (method_str == kJSSetPageYOffset) {
if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
ScrollToY(GetScaled(args[0].AsInt()));
return pp::Var();
}
if (method_str == kJSPageXOffset) {
return pp::Var(static_cast<int32_t>(
h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
}
if (method_str == kJSSetPageXOffset) {
if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
ScrollToX(GetScaled(args[0].AsInt()));
return pp::Var();
}
if (method_str == kJSRemovePrintButton) {
CreateToolbar(kPrintPreviewToolbarButtons,
arraysize(kPrintPreviewToolbarButtons));
UpdateToolbarPosition(false);
Invalidate(pp::Rect(plugin_size_));
return pp::Var();
}
if (method_str == kJSGoToPage) {
if (args.size() == 1 && args[0].is_string()) {
ScrollToPage(atoi(args[0].AsString().c_str()));
}
return pp::Var();
}
if (method_str == kJSAccessibility) {
if (args.size() == 0) {
base::DictionaryValue node;
node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
node.SetBoolean(kAccessibleLoaded,
document_load_state_ != LOAD_STATE_LOADING);
bool has_permissions =
engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
node.SetBoolean(kAccessibleCopyable, has_permissions);
std::string json;
base::JSONWriter::Write(&node, &json);
return pp::Var(json);
} else if (args[0].is_number()) {
return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
}
}
if (method_str == kJSPrintPreviewPageCount) {
if (args.size() == 1 && args[0].is_number())
SetPrintPreviewMode(args[0].AsInt());
return pp::Var();
}
if (method_str == kJSLoadPreviewPage) {
if (args.size() == 2 && args[0].is_string() && args[1].is_number())
ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
return pp::Var();
}
if (method_str == kJSGetPageLocationNormalized) {
const size_t kMaxLength = 30;
char location_info[kMaxLength];
int page_idx = engine_->GetMostVisiblePage();
if (page_idx < 0)
return pp::Var(std::string());
pp::Rect rect = engine_->GetPageContentsRect(page_idx);
int v_scrollbar_reserved_thickness =
v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
rect.set_x(rect.x() + ((plugin_size_.width() -
v_scrollbar_reserved_thickness - available_area_.width()) / 2));
base::snprintf(location_info,
kMaxLength,
"%0.4f;%0.4f;%0.4f;%0.4f;",
rect.x() / static_cast<float>(plugin_size_.width()),
rect.y() / static_cast<float>(plugin_size_.height()),
rect.width() / static_cast<float>(plugin_size_.width()),
rect.height()/ static_cast<float>(plugin_size_.height()));
return pp::Var(std::string(location_info));
}
if (method_str == kJSSetPageNumbers) {
if (args.size() != 1 || !args[0].is_string())
return pp::Var();
const int num_pages_signed = engine_->GetNumberOfPages();
if (num_pages_signed <= 0)
return pp::Var();
scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
base::JSONReader::Read(args[0].AsString(), false)));
const size_t num_pages = static_cast<size_t>(num_pages_signed);
if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
return pp::Var();
std::vector<int> print_preview_page_numbers;
for (size_t index = 0; index < num_pages; ++index) {
int page_number = 0; // |page_number| is 1-based.
if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
return pp::Var();
print_preview_page_numbers.push_back(page_number);
}
print_preview_page_numbers_ = print_preview_page_numbers;
page_indicator_.set_current_page(GetPageNumberToDisplay());
return pp::Var();
}
// This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
// In JS, creating a synthetic keyboard event and dispatching it always
// result in a keycode of 0.
if (method_str == kJSSendKeyEvent) {
if (args.size() == 1 && args[0].is_number()) {
pp::KeyboardInputEvent event(
this, // instance
PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
0, // timestamp, not used for kbd events.
0, // no modifiers.
args[0].AsInt(), // keycode.
pp::Var()); // no char text needed.
HandleInputEvent(event);
}
}
return pp::Var();
}
void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
bool force_no_horizontal_scrollbar = false;
int scrollbar_thickness = GetScrollbarThickness();
if (old_device_scale != device_scale_) {
// Change in device scale forces us to recreate resources
ConfigureNumberImageGenerator();
CreateToolbar(current_tb_info_, current_tb_info_size_);
// Load autoscroll anchor image.
autoscroll_anchor_ =
CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
ConfigurePageIndicator();
ConfigureProgressBar();
pp::Point scroll_position = engine_->GetScrollPosition();
ScalePoint(device_scale_ / old_device_scale, &scroll_position);
engine_->SetScrollPosition(scroll_position);
}
UpdateZoomScale();
if (zoom_ != old_zoom || device_scale_ != old_device_scale)
engine_->ZoomUpdated(zoom_ * device_scale_);
if (zoom_ != old_zoom)
ZoomChanged(zoom_);
available_area_ = pp::Rect(plugin_size_);
if (GetDocumentPixelHeight() > plugin_size_.height()) {
CreateVerticalScrollbar();
} else {
DestroyVerticalScrollbar();
}
int v_scrollbar_reserved_thickness =
v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
if (!force_no_horizontal_scrollbar &&
GetDocumentPixelWidth() >
(plugin_size_.width() - v_scrollbar_reserved_thickness)) {
CreateHorizontalScrollbar();
// Adding the horizontal scrollbar now might cause us to need vertical
// scrollbars.
if (GetDocumentPixelHeight() >
plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
CreateVerticalScrollbar();
}
} else {
DestroyHorizontalScrollbar();
}
#ifdef ENABLE_THUMBNAILS
int thumbnails_pos = 0, thumbnails_total = 0;
#endif
if (v_scrollbar_.get()) {
v_scrollbar_->SetScale(device_scale_);
available_area_.set_width(
std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
#ifdef ENABLE_THUMBNAILS
int height = plugin_size_.height();
#endif
int height_dip = plugin_dip_size_.height();
#if defined(OS_MACOSX)
// Before Lion, Mac always had the resize at the bottom. After that, it
// never did.
if ((base::mac::IsOSSnowLeopard() && full_) ||
(base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
#else
if (h_scrollbar_.get()) {
#endif // defined(OS_MACOSX)
#ifdef ENABLE_THUMBNAILS
height -= GetScaled(GetScrollbarThickness());
#endif
height_dip -= GetScrollbarThickness();
}
#ifdef ENABLE_THUMBNAILS
int32 doc_height = GetDocumentPixelHeight();
#endif
int32 doc_height_dip =
static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
#if defined(OS_MACOSX)
// On the Mac we always allow room for the resize button (whose width is
// the same as that of the scrollbar) in full mode. However, if there is no
// no horizontal scrollbar, the end of the scrollbar will scroll past the
// end of the document. This is because the scrollbar assumes that its own
// height (in the case of a vscroll bar) is the same as the height of the
// viewport. Since the viewport is actually larger, we compensate by
// adjusting the document height. Similar logic applies below for the
// horizontal scrollbar.
// For example, if the document size is 1000, and the viewport size is 200,
// then the scrollbar position at the end will be 800. In this case the
// viewport is actally 215 (assuming 15 as the scrollbar width) but the
// scrollbar thinks it is 200. We want the scrollbar position at the end to
// be 785. Making the document size 985 achieves this.
if (full_ && !h_scrollbar_.get()) {
#ifdef ENABLE_THUMBNAILS
doc_height -= GetScaled(GetScrollbarThickness());
#endif
doc_height_dip -= GetScrollbarThickness();
}
#endif // defined(OS_MACOSX)
int32 position;
position = v_scrollbar_->GetValue();
position = static_cast<int>(position * zoom_ / old_zoom);
valid_v_range_ = doc_height_dip - height_dip;
if (position > valid_v_range_)
position = valid_v_range_;
v_scrollbar_->SetValue(position);
PP_Rect loc;
loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
if (IsOverlayScrollbar())
loc.point.x -= scrollbar_thickness;
loc.point.y = 0;
loc.size.width = scrollbar_thickness;
loc.size.height = height_dip;
v_scrollbar_->SetLocation(loc);
v_scrollbar_->SetDocumentSize(doc_height_dip);
#ifdef ENABLE_THUMBNAILS
thumbnails_pos = position;
thumbnails_total = doc_height - height;
#endif
}
if (h_scrollbar_.get()) {
h_scrollbar_->SetScale(device_scale_);
available_area_.set_height(
std::max(0, plugin_size_.height() -
GetScaled(GetScrollbarReservedThickness())));
int width_dip = plugin_dip_size_.width();
// See note above.
#if defined(OS_MACOSX)
if ((base::mac::IsOSSnowLeopard() && full_) ||
(base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
#else
if (v_scrollbar_.get()) {
#endif
width_dip -= GetScrollbarThickness();
}
int32 doc_width_dip =
static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
#if defined(OS_MACOSX)
// See comment in the above if (v_scrollbar_.get()) block.
if (full_ && !v_scrollbar_.get())
doc_width_dip -= GetScrollbarThickness();
#endif // defined(OS_MACOSX)
int32 position;
position = h_scrollbar_->GetValue();
position = static_cast<int>(position * zoom_ / old_zoom);
position = std::min(position, doc_width_dip - width_dip);
h_scrollbar_->SetValue(position);
PP_Rect loc;
loc.point.x = 0;
loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
if (IsOverlayScrollbar())
loc.point.y -= scrollbar_thickness;
loc.size.width = width_dip;
loc.size.height = scrollbar_thickness;
h_scrollbar_->SetLocation(loc);
h_scrollbar_->SetDocumentSize(doc_width_dip);
}
int doc_width = GetDocumentPixelWidth();
if (doc_width < available_area_.width()) {
available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
available_area_.set_width(doc_width);
}
int doc_height = GetDocumentPixelHeight();
if (doc_height < available_area_.height()) {
available_area_.set_height(doc_height);
}
// We'll invalidate the entire plugin anyways.
UpdateToolbarPosition(false);
UpdateProgressBarPosition(false);
UpdatePageIndicatorPosition(false);
#ifdef ENABLE_THUMBNAILS
// Update thumbnail control position.
thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
GetScaled(kThumbnailsWidth), plugin_size_.height());
if (v_scrollbar_.get())
thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
if (h_scrollbar_.get())
thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
thumbnails_.SetRect(thumbnails_rc, false);
#endif
CalculateBackgroundParts();
engine_->PageOffsetUpdated(available_area_.point());
engine_->PluginSizeUpdated(available_area_.size());
if (!document_size_.GetArea())
return;
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
// Run the plugin size change callback asynchronously. This function can be
// invoked by a layout change which should not re-enter into JS synchronously.
pp::CompletionCallback callback =
callback_factory_.NewCallback(&Instance::RunCallback,
on_plugin_size_changed_callback_);
pp::Module::Get()->core()->CallOnMainThread(0, callback);
}
void Instance::RunCallback(int32_t, pp::Var callback) {
if (callback.is_string())
ExecuteScript(callback);
}
void Instance::CreateHorizontalScrollbar() {
if (h_scrollbar_.get())
return;
h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
}
void Instance::CreateVerticalScrollbar() {
if (v_scrollbar_.get())
return;
v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
}
void Instance::DestroyHorizontalScrollbar() {
if (!h_scrollbar_.get())
return;
if (h_scrollbar_->GetValue())
engine_->ScrolledToXPosition(0);
h_scrollbar_.reset();
}
void Instance::DestroyVerticalScrollbar() {
if (!v_scrollbar_.get())
return;
if (v_scrollbar_->GetValue())
engine_->ScrolledToYPosition(0);
v_scrollbar_.reset();
page_indicator_.Show(false, true);
}
int Instance::GetScrollbarThickness() {
if (scrollbar_thickness_ == -1) {
pp::Scrollbar_Dev temp_scrollbar(this, false);
scrollbar_thickness_ = temp_scrollbar.GetThickness();
scrollbar_reserved_thickness_ =
temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
}
return scrollbar_thickness_;
}
int Instance::GetScrollbarReservedThickness() {
GetScrollbarThickness();
return scrollbar_reserved_thickness_;
}
bool Instance::IsOverlayScrollbar() {
return GetScrollbarReservedThickness() == 0;
}
void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
toolbar_.reset(new FadingControls());
DCHECK(tb_info);
DCHECK(size >= 0);
// Remember the current toolbar information in case we need to recreate the
// images later.
current_tb_info_ = tb_info;
current_tb_info_size_ = size;
int max_height = 0;
pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
ScalePoint(device_scale_, &origin);
std::list<Button*> buttons;
for (size_t i = 0; i < size; i++) {
Button* btn = new Button;
pp::ImageData normal_face =
CreateResourceImage(tb_info[i].normal);
btn->CreateButton(tb_info[i].id,
origin,
true,
toolbar_.get(),
tb_info[i].style,
normal_face,
CreateResourceImage(tb_info[i].highlighted),
CreateResourceImage(tb_info[i].pressed));
buttons.push_back(btn);
origin += pp::Point(normal_face.size().width(), 0);
max_height = std::max(max_height, normal_face.size().height());
}
pp::Rect rc_toolbar(0, 0,
origin.x() + GetToolbarRightOffset(),
origin.y() + max_height + GetToolbarBottomOffset());
toolbar_->CreateFadingControls(
kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
std::list<Button*>::iterator iter;
for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
toolbar_->AddControl(*iter);
}
}
int Instance::GetToolbarRightOffset() {
int scrollbar_thickness = GetScrollbarThickness();
return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
}
int Instance::GetToolbarBottomOffset() {
int scrollbar_thickness = GetScrollbarThickness();
return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
}
std::vector<pp::ImageData> Instance::GetThumbnailResources() {
std::vector<pp::ImageData> num_images(10);
num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
return num_images;
}
std::vector<pp::ImageData> Instance::GetProgressBarResources(
pp::ImageData* background) {
std::vector<pp::ImageData> result(9);
result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
*background = CreateResourceImage(
PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
return result;
}
void Instance::CreatePageIndicator(bool always_visible) {
page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
number_image_generator(), always_visible);
ConfigurePageIndicator();
}
void Instance::ConfigurePageIndicator() {
pp::ImageData background =
CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
page_indicator_.Configure(pp::Point(), background);
}
void Instance::CreateProgressBar() {
pp::ImageData background;
std::vector<pp::ImageData> images = GetProgressBarResources(&background);
std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
device_scale_, images, background, text);
}
void Instance::ConfigureProgressBar() {
pp::ImageData background;
std::vector<pp::ImageData> images = GetProgressBarResources(&background);
progress_bar_.Reconfigure(background, images, device_scale_);
}
void Instance::CreateThumbnails() {
thumbnails_.CreateThumbnailControl(
kThumbnailsId, pp::Rect(), false, this, engine_.get(),
number_image_generator());
}
void Instance::LoadUrl(const std::string& url) {
LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
}
void Instance::LoadPreviewUrl(const std::string& url) {
LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
}
void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
void (Instance::* method)(int32_t)) {
pp::URLRequestInfo request(this);
request.SetURL(url);
request.SetMethod("GET");
*loader = CreateURLLoaderInternal();
pp::CompletionCallback callback = loader_factory_.NewCallback(method);
int rv = loader->Open(request, callback);
if (rv != PP_OK_COMPLETIONPENDING)
callback.Run(rv);
}
pp::URLLoader Instance::CreateURLLoaderInternal() {
pp::URLLoader loader(this);
const PPB_URLLoaderTrusted* trusted_interface =
reinterpret_cast<const PPB_URLLoaderTrusted*>(
pp::Module::Get()->GetBrowserInterface(
PPB_URLLOADERTRUSTED_INTERFACE));
if (trusted_interface)
trusted_interface->GrantUniversalAccess(loader.pp_resource());
return loader;
}
int Instance::GetInitialPage(const std::string& url) {
size_t found_idx = url.find('#');
if (found_idx == std::string::npos)
return -1;
const std::string& ref = url.substr(found_idx + 1);
std::vector<std::string> fragments;
Tokenize(ref, kDelimiters, &fragments);
// Page number to return, zero-based.
int page = -1;
// Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
// mentioned except by example in the Adobe "PDF Open Parameters" document.
if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
return engine_->GetNamedDestinationPage(fragments[0]);
for (size_t i = 0; i < fragments.size(); ++i) {
std::vector<std::string> key_value;
base::SplitString(fragments[i], '=', &key_value);
if (key_value.size() != 2)
continue;
const std::string& key = key_value[0];
const std::string& value = key_value[1];
if (base::strcasecmp(kPage, key.c_str()) == 0) {
// |page_value| is 1-based.
int page_value = -1;
if (base::StringToInt(value, &page_value) && page_value > 0)
page = page_value - 1;
continue;
}
if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
// |page_value| is 0-based.
int page_value = engine_->GetNamedDestinationPage(value);
if (page_value >= 0)
page = page_value;
continue;
}
}
return page;
}
void Instance::UpdateToolbarPosition(bool invalidate) {
pp::Rect ctrl_rc = toolbar_->GetControlsRect();
int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
GetScaled(kToolbarFadingOffsetLeft);
int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
GetScaled(kToolbarFadingOffsetBottom);
// Update toolbar position
if (plugin_size_.width() < min_toolbar_width ||
plugin_size_.height() < min_toolbar_height) {
// Disable toolbar if it does not fit on the screen.
toolbar_->Show(false, invalidate);
} else {
pp::Point offset(
plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
toolbar_->MoveBy(offset, invalidate);
int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
toolbar_->Show(painted_first_page_, invalidate);
}
}
void Instance::UpdateProgressBarPosition(bool invalidate) {
// TODO(gene): verify we don't overlap with toolbar.
int scrollbar_thickness = GetScrollbarThickness();
pp::Point progress_origin(
scrollbar_thickness + GetScaled(kProgressOffsetLeft),
plugin_size_.height() - progress_bar_.rect().height() -
scrollbar_thickness - GetScaled(kProgressOffsetBottom));
progress_bar_.MoveTo(progress_origin, invalidate);
}
void Instance::UpdatePageIndicatorPosition(bool invalidate) {
int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
pp::Point origin(
plugin_size_.width() - page_indicator_.rect().width() -
GetScaled(GetScrollbarReservedThickness()),
page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
doc_height, plugin_size_.height()));
page_indicator_.MoveTo(origin, invalidate);
}
void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
double old_zoom = zoom_;
zoom_mode_ = zoom_mode;
if (zoom_mode_ == ZOOM_SCALE)
zoom_ = scale;
UpdateZoomScale();
engine_->ZoomUpdated(zoom_ * device_scale_);
OnGeometryChanged(old_zoom, device_scale_);
// If fit-to-height, snap to the beginning of the most visible page.
if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
ScrollToPage(engine_->GetMostVisiblePage());
}
// Update sticky buttons to the current zoom style.
Button* ftp_btn = static_cast<Button*>(
toolbar_->GetControl(kFitToPageButtonId));
Button* ftw_btn = static_cast<Button*>(
toolbar_->GetControl(kFitToWidthButtonId));
switch (zoom_mode_) {
case ZOOM_FIT_TO_PAGE:
ftp_btn->SetPressedState(true);
ftw_btn->SetPressedState(false);
break;
case ZOOM_FIT_TO_WIDTH:
ftw_btn->SetPressedState(true);
ftp_btn->SetPressedState(false);
break;
default:
ftw_btn->SetPressedState(false);
ftp_btn->SetPressedState(false);
}
}
void Instance::UpdateZoomScale() {
switch (zoom_mode_) {
case ZOOM_SCALE:
break; // Keep current scale.
case ZOOM_FIT_TO_PAGE: {
int page_num = engine_->GetFirstVisiblePage();
if (page_num == -1)
break;
pp::Rect rc = engine_->GetPageRect(page_num);
if (!rc.height())
break;
// Calculate fit to width zoom level.
double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
GetScrollbarReservedThickness()) / document_size_.width();
// Calculate fit to height zoom level. If document will not fit
// horizontally, adjust zoom level to allow space for horizontal
// scrollbar.
double fth_zoom =
static_cast<double>(plugin_dip_size_.height()) / rc.height();
if (fth_zoom * document_size_.width() >
plugin_dip_size_.width() - GetScrollbarReservedThickness())
fth_zoom = static_cast<double>(plugin_dip_size_.height()
- GetScrollbarReservedThickness()) / rc.height();
zoom_ = std::min(ftw_zoom, fth_zoom);
} break;
case ZOOM_FIT_TO_WIDTH:
case ZOOM_AUTO:
if (!document_size_.width())
break;
zoom_ = static_cast<double>(plugin_dip_size_.width() -
GetScrollbarReservedThickness()) / document_size_.width();
if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
zoom_ = 1.0;
break;
}
zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
}
double Instance::CalculateZoom(uint32 control_id) const {
if (control_id == kZoomInButtonId) {
for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
if (current_zoom - content::kEpsilon > zoom_)
return current_zoom;
}
} else {
for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
if (current_zoom + content::kEpsilon < zoom_)
return current_zoom;
}
}
return zoom_;
}
pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
pp::ImageData resource_data;
if (hidpi_enabled_) {
resource_data =
pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
}
return resource_data.data() ? resource_data
: pp::PDF::GetResourceImage(this, image_id);
}
std::string Instance::GetLocalizedString(PP_ResourceString id) {
pp::Var rv(pp::PDF::GetLocalizedString(this, id));
if (!rv.is_string())
return std::string();
return rv.AsString();
}
void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
std::string str(GetLocalizedString(id));
pp::FontDescription_Dev description;
description.set_family(PP_FONTFAMILY_SANSSERIF);
description.set_size(kMessageTextSize * device_scale_);
pp::Font_Dev font(this, description);
int length = font.MeasureSimpleText(str);
pp::Point point(top_center);
point.set_x(point.x() - length / 2);
DCHECK(!image_data_.is_null());
font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
}
void Instance::SetPrintPreviewMode(int page_count) {
if (!IsPrintPreview() || page_count <= 0) {
print_preview_page_count_ = 0;
return;
}
print_preview_page_count_ = page_count;
ScrollToPage(0);
engine_->AppendBlankPages(print_preview_page_count_);
if (preview_pages_info_.size() > 0)
LoadAvailablePreviewPage();
}
bool Instance::IsPrintPreview() {
return IsPrintPreviewUrl(url_);
}
int Instance::GetPageNumberToDisplay() {
int page = engine_->GetMostVisiblePage();
if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
return print_preview_page_numbers_[page];
}
return page + 1;
}
void Instance::ProcessPreviewPageInfo(const std::string& url,
int dst_page_index) {
if (!IsPrintPreview() || print_preview_page_count_ < 0)
return;
int src_page_index = ExtractPrintPreviewPageIndex(url);
if (src_page_index < 1)
return;
preview_pages_info_.push(std::make_pair(url, dst_page_index));
LoadAvailablePreviewPage();
}
void Instance::LoadAvailablePreviewPage() {
if (preview_pages_info_.size() <= 0)
return;
std::string url = preview_pages_info_.front().first;
int dst_page_index = preview_pages_info_.front().second;
int src_page_index = ExtractPrintPreviewPageIndex(url);
if (src_page_index < 1 ||
dst_page_index >= print_preview_page_count_ ||
preview_document_load_state_ == LOAD_STATE_LOADING) {
return;
}
preview_document_load_state_ = LOAD_STATE_LOADING;
LoadPreviewUrl(url);
}
void Instance::EnableAutoscroll(const pp::Point& origin) {
if (is_autoscroll_)
return;
pp::Size client_size = plugin_size_;
if (v_scrollbar_.get())
client_size.Enlarge(-GetScrollbarThickness(), 0);
if (h_scrollbar_.get())
client_size.Enlarge(0, -GetScrollbarThickness());
// Do not allow autoscroll if client area is too small.
if (autoscroll_anchor_.size().width() > client_size.width() ||
autoscroll_anchor_.size().height() > client_size.height())
return;
autoscroll_rect_ = pp::Rect(
pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
origin.y() - autoscroll_anchor_.size().height() / 2),
autoscroll_anchor_.size());
// Make sure autoscroll anchor is in the client area.
if (autoscroll_rect_.right() > client_size.width()) {
autoscroll_rect_.set_x(
client_size.width() - autoscroll_anchor_.size().width());
}
if (autoscroll_rect_.bottom() > client_size.height()) {
autoscroll_rect_.set_y(
client_size.height() - autoscroll_anchor_.size().height());
}
if (autoscroll_rect_.x() < 0)
autoscroll_rect_.set_x(0);
if (autoscroll_rect_.y() < 0)
autoscroll_rect_.set_y(0);
is_autoscroll_ = true;
Invalidate(kAutoScrollId, autoscroll_rect_);
ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
}
void Instance::DisableAutoscroll() {
if (is_autoscroll_) {
is_autoscroll_ = false;
Invalidate(kAutoScrollId, autoscroll_rect_);
}
}
PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
// Scroll only if mouse pointer is outside of the anchor area.
if (autoscroll_rect_.Contains(mouse_pos)) {
autoscroll_x_ = 0;
autoscroll_y_ = 0;
return PP_CURSORTYPE_MIDDLEPANNING;
}
// Relative position to the center of anchor area.
pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
// Calculate angle from the X axis. Angle is in range from -pi to pi.
double angle = atan2(static_cast<double>(rel_pos.y()),
static_cast<double>(rel_pos.x()));
autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
// Angle is from -pi to pi. Screen Y is increasing toward bottom,
// so negative angle represent north direction.
if (angle < - (M_PI * 7.0 / 8.0)) {
// going west
return PP_CURSORTYPE_WESTPANNING;
} else if (angle < - (M_PI * 5.0 / 8.0)) {
// going north-west
return PP_CURSORTYPE_NORTHWESTPANNING;
} else if (angle < - (M_PI * 3.0 / 8.0)) {
// going north.
return PP_CURSORTYPE_NORTHPANNING;
} else if (angle < - (M_PI * 1.0 / 8.0)) {
// going north-east
return PP_CURSORTYPE_NORTHEASTPANNING;
} else if (angle < M_PI * 1.0 / 8.0) {
// going east.
return PP_CURSORTYPE_EASTPANNING;
} else if (angle < M_PI * 3.0 / 8.0) {
// going south-east
return PP_CURSORTYPE_SOUTHEASTPANNING;
} else if (angle < M_PI * 5.0 / 8.0) {
// going south.
return PP_CURSORTYPE_SOUTHPANNING;
} else if (angle < M_PI * 7.0 / 8.0) {
// going south-west
return PP_CURSORTYPE_SOUTHWESTPANNING;
}
// went around the circle, going west again
return PP_CURSORTYPE_WESTPANNING;
}
void Instance::ConfigureNumberImageGenerator() {
std::vector<pp::ImageData> num_images = GetThumbnailResources();
pp::ImageData number_background = CreateResourceImage(
PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
number_image_generator_->Configure(number_background,
num_images,
device_scale_);
}
NumberImageGenerator* Instance::number_image_generator() {
if (!number_image_generator_.get()) {
number_image_generator_.reset(new NumberImageGenerator(this));
ConfigureNumberImageGenerator();
}
return number_image_generator_.get();
}
int Instance::GetScaled(int x) const {
return static_cast<int>(x * device_scale_);
}
void Instance::UserMetricsRecordAction(const std::string& action) {
pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
}
PDFScriptableObject::PDFScriptableObject(Instance* instance)
: instance_(instance) {
}
PDFScriptableObject::~PDFScriptableObject() {
}
bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
return instance_->HasScriptableMethod(name, exception);
}
pp::Var PDFScriptableObject::Call(const pp::Var& method,
const std::vector<pp::Var>& args,
pp::Var* exception) {
return instance_->CallScriptableMethod(method, args, exception);
}
} // namespace chrome_pdf