Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "pdf/page_indicator.h" |
| 6 | |
| 7 | #include "base/logging.h" |
| 8 | #include "base/strings/string_util.h" |
| 9 | #include "pdf/draw_utils.h" |
| 10 | #include "pdf/number_image_generator.h" |
| 11 | #include "pdf/resource_consts.h" |
| 12 | |
| 13 | namespace chrome_pdf { |
| 14 | |
| 15 | |
| 16 | PageIndicator::PageIndicator() |
| 17 | : current_page_(0), |
Primiano Tucci | 1320f92 | 2014-09-30 14:45:55 +0100 | [diff] [blame] | 18 | fade_out_timer_id_(0), |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 19 | splash_timeout_(kPageIndicatorSplashTimeoutMs), |
| 20 | fade_timeout_(kPageIndicatorScrollFadeTimeoutMs), |
| 21 | always_visible_(false) { |
| 22 | } |
| 23 | |
| 24 | PageIndicator::~PageIndicator() { |
| 25 | } |
| 26 | |
| 27 | bool PageIndicator::CreatePageIndicator( |
| 28 | uint32 id, |
| 29 | bool visible, |
| 30 | Control::Owner* delegate, |
| 31 | NumberImageGenerator* number_image_generator, |
| 32 | bool always_visible) { |
| 33 | number_image_generator_ = number_image_generator; |
| 34 | always_visible_ = always_visible; |
| 35 | |
| 36 | pp::Rect rc; |
| 37 | bool res = Control::Create(id, rc, visible, delegate); |
| 38 | return res; |
| 39 | } |
| 40 | |
| 41 | void PageIndicator::Configure(const pp::Point& origin, |
| 42 | const pp::ImageData& background) { |
| 43 | background_ = background; |
| 44 | pp::Rect rc(origin, background_.size()); |
| 45 | Control::SetRect(rc, false); |
| 46 | } |
| 47 | |
| 48 | void PageIndicator::set_current_page(int current_page) { |
| 49 | if (current_page_ < 0) |
| 50 | return; |
| 51 | |
| 52 | current_page_ = current_page; |
| 53 | } |
| 54 | |
| 55 | void PageIndicator::Paint(pp::ImageData* image_data, const pp::Rect& rc) { |
| 56 | if (!visible()) |
| 57 | return; |
| 58 | |
| 59 | pp::Rect draw_rc = rc.Intersect(rect()); |
| 60 | if (draw_rc.IsEmpty()) |
| 61 | return; |
| 62 | |
| 63 | // Copying the background image to a temporary buffer. |
| 64 | pp::ImageData buffer(owner()->GetInstance(), background_.format(), |
| 65 | background_.size(), false); |
| 66 | CopyImage(background_, pp::Rect(background_.size()), |
| 67 | &buffer, pp::Rect(background_.size()), false); |
| 68 | |
| 69 | // Creating the page number image. |
| 70 | pp::ImageData page_number_image; |
| 71 | number_image_generator_->GenerateImage(current_page_, &page_number_image); |
| 72 | |
| 73 | pp::Point origin2( |
| 74 | (buffer.size().width() - page_number_image.size().width()) / 2.5, |
| 75 | (buffer.size().height() - page_number_image.size().height()) / 2); |
| 76 | |
| 77 | // Drawing page number image on the buffer. |
| 78 | if (origin2.x() > 0 && origin2.y() > 0) { |
| 79 | CopyImage(page_number_image, |
| 80 | pp::Rect(pp::Point(), page_number_image.size()), |
| 81 | &buffer, |
| 82 | pp::Rect(origin2, page_number_image.size()), |
| 83 | false); |
| 84 | } |
| 85 | |
| 86 | // Drawing the buffer. |
| 87 | pp::Point origin = draw_rc.point(); |
| 88 | draw_rc.Offset(-rect().x(), -rect().y()); |
| 89 | AlphaBlend(buffer, draw_rc, image_data, origin, transparency()); |
| 90 | } |
| 91 | |
| 92 | void PageIndicator::OnTimerFired(uint32 timer_id) { |
| 93 | FadingControl::OnTimerFired(timer_id); |
| 94 | if (timer_id == fade_out_timer_id_) { |
| 95 | Fade(false, fade_timeout_); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | void PageIndicator::ResetFadeOutTimer() { |
| 100 | fade_out_timer_id_ = |
| 101 | owner()->ScheduleTimer(id(), splash_timeout_); |
| 102 | } |
| 103 | |
| 104 | void PageIndicator::OnFadeInComplete() { |
| 105 | if (!always_visible_) |
| 106 | ResetFadeOutTimer(); |
| 107 | } |
| 108 | |
| 109 | void PageIndicator::Splash() { |
| 110 | Splash(kPageIndicatorSplashTimeoutMs, kPageIndicatorScrollFadeTimeoutMs); |
| 111 | } |
| 112 | |
| 113 | void PageIndicator::Splash(uint32 splash_timeout, uint32 fade_timeout) { |
| 114 | splash_timeout_ = splash_timeout; |
| 115 | fade_timeout_ = fade_timeout; |
| 116 | if (!always_visible_) |
| 117 | fade_out_timer_id_ = 0; |
| 118 | Fade(true, fade_timeout_); |
| 119 | } |
| 120 | |
| 121 | int PageIndicator::GetYPosition( |
| 122 | int vertical_scrollbar_y, int document_height, int plugin_height) { |
| 123 | double percent = static_cast<double>(vertical_scrollbar_y) / document_height; |
| 124 | return (plugin_height - rect().height()) * percent; |
| 125 | } |
| 126 | |
| 127 | } // namespace chrome_pdf |