Add the pdf plugin's source in src\pdf.

pdf/page_indicator.cc

+// 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/page_indicator.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "pdf/draw_utils.h"
+#include "pdf/number_image_generator.h"
+#include "pdf/resource_consts.h"
+
+namespace chrome_pdf {
+
+
+PageIndicator::PageIndicator()
+    : current_page_(0),
+      splash_timeout_(kPageIndicatorSplashTimeoutMs),
+      fade_timeout_(kPageIndicatorScrollFadeTimeoutMs),
+      always_visible_(false) {
+}
+
+PageIndicator::~PageIndicator() {
+}
+
+bool PageIndicator::CreatePageIndicator(
+    uint32 id,
+    bool visible,
+    Control::Owner* delegate,
+    NumberImageGenerator* number_image_generator,
+    bool always_visible) {
+  number_image_generator_ = number_image_generator;
+  always_visible_ = always_visible;
+
+  pp::Rect rc;
+  bool res = Control::Create(id, rc, visible, delegate);
+  return res;
+}
+
+void PageIndicator::Configure(const pp::Point& origin,
+                              const pp::ImageData& background) {
+  background_ = background;
+  pp::Rect rc(origin, background_.size());
+  Control::SetRect(rc, false);
+}
+
+void PageIndicator::set_current_page(int current_page) {
+  if (current_page_ < 0)
+    return;
+
+  current_page_ = current_page;
+}
+
+void PageIndicator::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  if (!visible())
+    return;
+
+  pp::Rect draw_rc = rc.Intersect(rect());
+  if (draw_rc.IsEmpty())
+    return;
+
+  // Copying the background image to a temporary buffer.
+  pp::ImageData buffer(owner()->GetInstance(), background_.format(),
+                       background_.size(), false);
+  CopyImage(background_, pp::Rect(background_.size()),
+            &buffer, pp::Rect(background_.size()), false);
+
+  // Creating the page number image.
+  pp::ImageData page_number_image;
+  number_image_generator_->GenerateImage(current_page_, &page_number_image);
+
+  pp::Point origin2(
+      (buffer.size().width() - page_number_image.size().width()) / 2.5,
+      (buffer.size().height() - page_number_image.size().height()) / 2);
+
+  // Drawing page number image on the buffer.
+  if (origin2.x() > 0 && origin2.y() > 0) {
+    CopyImage(page_number_image,
+              pp::Rect(pp::Point(), page_number_image.size()),
+              &buffer,
+              pp::Rect(origin2, page_number_image.size()),
+              false);
+  }
+
+  // Drawing the buffer.
+  pp::Point origin = draw_rc.point();
+  draw_rc.Offset(-rect().x(), -rect().y());
+  AlphaBlend(buffer, draw_rc, image_data, origin, transparency());
+}
+
+void PageIndicator::OnTimerFired(uint32 timer_id) {
+  FadingControl::OnTimerFired(timer_id);
+  if (timer_id == fade_out_timer_id_) {
+    Fade(false, fade_timeout_);
+  }
+}
+
+void PageIndicator::ResetFadeOutTimer() {
+  fade_out_timer_id_ =
+      owner()->ScheduleTimer(id(), splash_timeout_);
+}
+
+void PageIndicator::OnFadeInComplete() {
+  if (!always_visible_)
+    ResetFadeOutTimer();
+}
+
+void PageIndicator::Splash() {
+  Splash(kPageIndicatorSplashTimeoutMs, kPageIndicatorScrollFadeTimeoutMs);
+}
+
+void PageIndicator::Splash(uint32 splash_timeout, uint32 fade_timeout) {
+  splash_timeout_ = splash_timeout;
+  fade_timeout_ = fade_timeout;
+  if (!always_visible_)
+    fade_out_timer_id_ = 0;
+  Fade(true, fade_timeout_);
+}
+
+int PageIndicator::GetYPosition(
+    int vertical_scrollbar_y, int document_height, int plugin_height) {
+  double percent = static_cast<double>(vertical_scrollbar_y) / document_height;
+  return (plugin_height - rect().height()) * percent;
+}
+
+}  // namespace chrome_pdf