browser_header_painter_ash.cc revision 6d86b77056ed63eb6871182f42a9fd5f07550f90 
1// Copyright 2014 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 "chrome/browser/ui/views/frame/browser_header_painter_ash.h"
6
7#include "ash/frame/caption_buttons/frame_caption_button_container_view.h"
8#include "ash/frame/header_painter_util.h"
9#include "base/logging.h"  // DCHECK
10#include "chrome/browser/ui/browser.h"
11#include "chrome/browser/ui/views/frame/browser_frame.h"
12#include "chrome/browser/ui/views/frame/browser_view.h"
13#include "grit/theme_resources.h"
14#include "third_party/skia/include/core/SkCanvas.h"
15#include "third_party/skia/include/core/SkColor.h"
16#include "third_party/skia/include/core/SkPaint.h"
17#include "third_party/skia/include/core/SkPath.h"
18#include "ui/base/resource/resource_bundle.h"
19#include "ui/base/theme_provider.h"
20#include "ui/gfx/animation/slide_animation.h"
21#include "ui/gfx/canvas.h"
22#include "ui/gfx/image/image_skia.h"
23#include "ui/gfx/rect.h"
24#include "ui/gfx/skia_util.h"
25#include "ui/views/view.h"
26#include "ui/views/widget/widget.h"
27#include "ui/views/widget/widget_delegate.h"
28
29using views::Widget;
30
31namespace {
32// Color for the window title text.
33const SkColor kWindowTitleTextColor = SkColorSetRGB(40, 40, 40);
34// Duration of crossfade animation for activating and deactivating frame.
35const int kActivationCrossfadeDurationMs = 200;
36
37// Tiles an image into an area, rounding the top corners. Samples |image|
38// starting |image_inset_x| pixels from the left of the image.
39void TileRoundRect(gfx::Canvas* canvas,
40                   const gfx::ImageSkia& image,
41                   const SkPaint& paint,
42                   const gfx::Rect& bounds,
43                   int top_left_corner_radius,
44                   int top_right_corner_radius,
45                   int image_inset_x) {
46  SkRect rect = gfx::RectToSkRect(bounds);
47  const SkScalar kTopLeftRadius = SkIntToScalar(top_left_corner_radius);
48  const SkScalar kTopRightRadius = SkIntToScalar(top_right_corner_radius);
49  SkScalar radii[8] = {
50      kTopLeftRadius, kTopLeftRadius,  // top-left
51      kTopRightRadius, kTopRightRadius,  // top-right
52      0, 0,   // bottom-right
53      0, 0};  // bottom-left
54  SkPath path;
55  path.addRoundRect(rect, radii, SkPath::kCW_Direction);
56  canvas->DrawImageInPath(image, -image_inset_x, 0, path, paint);
57}
58
59// Tiles |frame_image| and |frame_overlay_image| into an area, rounding the top
60// corners.
61void PaintFrameImagesInRoundRect(gfx::Canvas* canvas,
62                                 const gfx::ImageSkia& frame_image,
63                                 const gfx::ImageSkia& frame_overlay_image,
64                                 const SkPaint& paint,
65                                 const gfx::Rect& bounds,
66                                 int corner_radius,
67                                 int image_inset_x) {
68  SkXfermode::Mode normal_mode;
69  SkXfermode::AsMode(NULL, &normal_mode);
70
71  // If |paint| is using an unusual SkXfermode::Mode (this is the case while
72  // crossfading), we must create a new canvas to overlay |frame_image| and
73  // |frame_overlay_image| using |normal_mode| and then paint the result
74  // using the unusual mode. We try to avoid this because creating a new
75  // browser-width canvas is expensive.
76  bool fast_path = (frame_overlay_image.isNull() ||
77      SkXfermode::IsMode(paint.getXfermode(), normal_mode));
78  if (fast_path) {
79    TileRoundRect(canvas, frame_image, paint, bounds, corner_radius,
80        corner_radius, image_inset_x);
81
82    if (!frame_overlay_image.isNull()) {
83      // Adjust |bounds| such that |frame_overlay_image| is not tiled.
84      gfx::Rect overlay_bounds = bounds;
85      overlay_bounds.Intersect(
86          gfx::Rect(bounds.origin(), frame_overlay_image.size()));
87      int top_left_corner_radius = corner_radius;
88      int top_right_corner_radius = corner_radius;
89      if (overlay_bounds.width() < bounds.width() - corner_radius)
90        top_right_corner_radius = 0;
91      TileRoundRect(canvas, frame_overlay_image, paint, overlay_bounds,
92          top_left_corner_radius, top_right_corner_radius, 0);
93    }
94  } else {
95    gfx::Canvas temporary_canvas(bounds.size(), canvas->image_scale(), false);
96    temporary_canvas.TileImageInt(frame_image,
97                                  image_inset_x, 0,
98                                  0, 0,
99                                  bounds.width(), bounds.height());
100    temporary_canvas.DrawImageInt(frame_overlay_image, 0, 0);
101    TileRoundRect(canvas, gfx::ImageSkia(temporary_canvas.ExtractImageRep()),
102        paint, bounds, corner_radius, corner_radius, 0);
103  }
104}
105
106}  // namespace
107
108///////////////////////////////////////////////////////////////////////////////
109// BrowserHeaderPainterAsh, public:
110
111BrowserHeaderPainterAsh::BrowserHeaderPainterAsh()
112    : frame_(NULL),
113      is_tabbed_(false),
114      is_incognito_(false),
115      view_(NULL),
116      window_icon_(NULL),
117      caption_button_container_(NULL),
118      painted_height_(0),
119      initial_paint_(true),
120      mode_(MODE_INACTIVE),
121      activation_animation_(new gfx::SlideAnimation(this)) {
122}
123
124BrowserHeaderPainterAsh::~BrowserHeaderPainterAsh() {
125}
126
127void BrowserHeaderPainterAsh::Init(
128    views::Widget* frame,
129    BrowserView* browser_view,
130    views::View* header_view,
131    views::View* window_icon,
132    ash::FrameCaptionButtonContainerView* caption_button_container) {
133  DCHECK(frame);
134  DCHECK(browser_view);
135  DCHECK(header_view);
136  // window_icon may be NULL.
137  DCHECK(caption_button_container);
138  frame_ = frame;
139
140  is_tabbed_ = browser_view->browser()->is_type_tabbed();
141  is_incognito_ = !browser_view->IsRegularOrGuestSession();
142
143  view_ = header_view;
144  window_icon_ = window_icon;
145  caption_button_container_ = caption_button_container;
146}
147
148int BrowserHeaderPainterAsh::GetMinimumHeaderWidth() const {
149  // Ensure we have enough space for the window icon and buttons. We allow
150  // the title string to collapse to zero width.
151  return GetTitleBounds().x() +
152      caption_button_container_->GetMinimumSize().width();
153}
154
155void BrowserHeaderPainterAsh::PaintHeader(gfx::Canvas* canvas, Mode mode) {
156  Mode old_mode = mode_;
157  mode_ = mode;
158
159  if (mode_ != old_mode) {
160    if (!initial_paint_ &&
161        ash::HeaderPainterUtil::CanAnimateActivation(frame_)) {
162      activation_animation_->SetSlideDuration(kActivationCrossfadeDurationMs);
163      if (mode_ == MODE_ACTIVE)
164        activation_animation_->Show();
165      else
166        activation_animation_->Hide();
167    } else {
168      if (mode_ == MODE_ACTIVE)
169        activation_animation_->Reset(1);
170      else
171        activation_animation_->Reset(0);
172    }
173    initial_paint_ = false;
174  }
175
176  int corner_radius = (frame_->IsMaximized() || frame_->IsFullscreen()) ?
177      0 : ash::HeaderPainterUtil::GetTopCornerRadiusWhenRestored();
178
179  int active_alpha = activation_animation_->CurrentValueBetween(0, 255);
180  int inactive_alpha = 255 - active_alpha;
181
182  SkPaint paint;
183  if (inactive_alpha > 0) {
184    if (active_alpha > 0)
185      paint.setXfermodeMode(SkXfermode::kPlus_Mode);
186
187    gfx::ImageSkia inactive_frame_image;
188    gfx::ImageSkia inactive_frame_overlay_image;
189    GetFrameImages(MODE_INACTIVE, &inactive_frame_image,
190        &inactive_frame_overlay_image);
191
192    paint.setAlpha(inactive_alpha);
193    PaintFrameImagesInRoundRect(
194        canvas,
195        inactive_frame_image,
196        inactive_frame_overlay_image,
197        paint,
198        GetPaintedBounds(),
199        corner_radius,
200        ash::HeaderPainterUtil::GetThemeBackgroundXInset());
201  }
202
203  if (active_alpha > 0) {
204    gfx::ImageSkia active_frame_image;
205    gfx::ImageSkia active_frame_overlay_image;
206    GetFrameImages(MODE_ACTIVE, &active_frame_image,
207        &active_frame_overlay_image);
208
209    paint.setAlpha(active_alpha);
210    PaintFrameImagesInRoundRect(
211        canvas,
212        active_frame_image,
213        active_frame_overlay_image,
214        paint,
215        GetPaintedBounds(),
216        corner_radius,
217        ash::HeaderPainterUtil::GetThemeBackgroundXInset());
218  }
219
220  if (!frame_->IsMaximized() && !frame_->IsFullscreen())
221    PaintHighlightForRestoredWindow(canvas);
222  if (frame_->widget_delegate() &&
223      frame_->widget_delegate()->ShouldShowWindowTitle()) {
224    PaintTitleBar(canvas);
225  }
226}
227
228void BrowserHeaderPainterAsh::LayoutHeader() {
229  // Purposefully set |painted_height_| to an invalid value. We cannot use
230  // |painted_height_| because the computation of |painted_height_| may depend
231  // on having laid out the window controls.
232  painted_height_ = -1;
233
234  UpdateCaptionButtonImages();
235  caption_button_container_->Layout();
236
237  gfx::Size caption_button_container_size =
238      caption_button_container_->GetPreferredSize();
239  caption_button_container_->SetBounds(
240      view_->width() - caption_button_container_size.width(),
241      0,
242      caption_button_container_size.width(),
243      caption_button_container_size.height());
244
245  if (window_icon_) {
246    // Vertically center the window icon with respect to the caption button
247    // container.
248    int icon_size = ash::HeaderPainterUtil::GetDefaultIconSize();
249    int icon_offset_y = (caption_button_container_->height() - icon_size) / 2;
250    window_icon_->SetBounds(ash::HeaderPainterUtil::GetIconXOffset(),
251        icon_offset_y, icon_size, icon_size);
252  }
253}
254
255int BrowserHeaderPainterAsh::GetHeaderHeightForPainting() const {
256  return painted_height_;
257}
258
259void BrowserHeaderPainterAsh::SetHeaderHeightForPainting(int height) {
260  painted_height_ = height;
261}
262
263void BrowserHeaderPainterAsh::SchedulePaintForTitle() {
264  view_->SchedulePaintInRect(GetTitleBounds());
265}
266
267///////////////////////////////////////////////////////////////////////////////
268// gfx::AnimationDelegate overrides:
269
270void BrowserHeaderPainterAsh::AnimationProgressed(
271    const gfx::Animation* animation) {
272  view_->SchedulePaintInRect(GetPaintedBounds());
273}
274
275///////////////////////////////////////////////////////////////////////////////
276// BrowserHeaderPainterAsh, private:
277
278void BrowserHeaderPainterAsh::PaintHighlightForRestoredWindow(
279    gfx::Canvas* canvas) {
280  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
281  gfx::ImageSkia top_left_corner = *rb.GetImageSkiaNamed(
282      IDR_ASH_BROWSER_WINDOW_HEADER_SHADE_TOP_LEFT);
283  gfx::ImageSkia top_right_corner = *rb.GetImageSkiaNamed(
284      IDR_ASH_BROWSER_WINDOW_HEADER_SHADE_TOP_RIGHT);
285  gfx::ImageSkia top_edge = *rb.GetImageSkiaNamed(
286      IDR_ASH_BROWSER_WINDOW_HEADER_SHADE_TOP);
287  gfx::ImageSkia left_edge = *rb.GetImageSkiaNamed(
288      IDR_ASH_BROWSER_WINDOW_HEADER_SHADE_LEFT);
289  gfx::ImageSkia right_edge = *rb.GetImageSkiaNamed(
290      IDR_ASH_BROWSER_WINDOW_HEADER_SHADE_RIGHT);
291
292  int top_left_width = top_left_corner.width();
293  int top_left_height = top_left_corner.height();
294  canvas->DrawImageInt(top_left_corner, 0, 0);
295
296  int top_right_width = top_right_corner.width();
297  int top_right_height = top_right_corner.height();
298  canvas->DrawImageInt(top_right_corner,
299                       view_->width() - top_right_width,
300                       0);
301
302  canvas->TileImageInt(
303      top_edge,
304      top_left_width,
305      0,
306      view_->width() - top_left_width - top_right_width,
307      top_edge.height());
308
309  canvas->TileImageInt(left_edge,
310                       0,
311                       top_left_height,
312                       left_edge.width(),
313                       painted_height_ - top_left_height);
314
315  canvas->TileImageInt(right_edge,
316                       view_->width() - right_edge.width(),
317                       top_right_height,
318                       right_edge.width(),
319                       painted_height_ - top_right_height);
320}
321
322void BrowserHeaderPainterAsh::PaintTitleBar(gfx::Canvas* canvas) {
323  // The window icon is painted by its own views::View.
324  gfx::Rect title_bounds = GetTitleBounds();
325  title_bounds.set_x(view_->GetMirroredXForRect(title_bounds));
326  canvas->DrawStringRectWithFlags(frame_->widget_delegate()->GetWindowTitle(),
327                                  BrowserFrame::GetTitleFontList(),
328                                  kWindowTitleTextColor,
329                                  title_bounds,
330                                  gfx::Canvas::NO_SUBPIXEL_RENDERING);
331}
332
333void BrowserHeaderPainterAsh::GetFrameImages(
334    Mode mode,
335    gfx::ImageSkia* frame_image,
336    gfx::ImageSkia* frame_overlay_image) const {
337  if (is_tabbed_) {
338    GetFrameImagesForTabbedBrowser(mode, frame_image, frame_overlay_image);
339  } else {
340    *frame_image = GetFrameImageForNonTabbedBrowser(mode);
341    *frame_overlay_image = gfx::ImageSkia();
342  }
343}
344
345void BrowserHeaderPainterAsh::GetFrameImagesForTabbedBrowser(
346    Mode mode,
347    gfx::ImageSkia* frame_image,
348    gfx::ImageSkia* frame_overlay_image) const {
349  int frame_image_id = 0;
350  int frame_overlay_image_id = 0;
351
352  ui::ThemeProvider* tp = frame_->GetThemeProvider();
353  if (tp->HasCustomImage(IDR_THEME_FRAME_OVERLAY) && !is_incognito_) {
354    frame_overlay_image_id = (mode == MODE_ACTIVE) ?
355        IDR_THEME_FRAME_OVERLAY : IDR_THEME_FRAME_OVERLAY_INACTIVE;
356  }
357
358  if (mode == MODE_ACTIVE) {
359    frame_image_id = is_incognito_ ?
360        IDR_THEME_FRAME_INCOGNITO : IDR_THEME_FRAME;
361  } else {
362    frame_image_id = is_incognito_ ?
363        IDR_THEME_FRAME_INCOGNITO_INACTIVE : IDR_THEME_FRAME_INACTIVE;
364  }
365
366  *frame_image = *tp->GetImageSkiaNamed(frame_image_id);
367  *frame_overlay_image = (frame_overlay_image_id == 0) ?
368      gfx::ImageSkia() : *tp->GetImageSkiaNamed(frame_overlay_image_id);
369}
370
371gfx::ImageSkia BrowserHeaderPainterAsh::GetFrameImageForNonTabbedBrowser(
372    Mode mode) const {
373  // Request the images from the ResourceBundle (and not from the ThemeProvider)
374  // in order to get the default non-themed assets.
375  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
376  if (mode == MODE_ACTIVE) {
377    return *rb.GetImageSkiaNamed(is_incognito_ ?
378        IDR_THEME_FRAME_INCOGNITO : IDR_THEME_FRAME);
379  }
380  return *rb.GetImageSkiaNamed(is_incognito_ ?
381      IDR_THEME_FRAME_INCOGNITO_INACTIVE : IDR_THEME_FRAME_INACTIVE);
382}
383
384void BrowserHeaderPainterAsh::UpdateCaptionButtonImages() {
385  int hover_background_id = 0;
386  int pressed_background_id = 0;
387  if (frame_->IsMaximized() || frame_->IsFullscreen()) {
388    hover_background_id =
389        IDR_ASH_BROWSER_WINDOW_CONTROL_BACKGROUND_MAXIMIZED_H;
390    pressed_background_id =
391        IDR_ASH_BROWSER_WINDOW_CONTROL_BACKGROUND_MAXIMIZED_P;
392  } else {
393    hover_background_id =
394        IDR_ASH_BROWSER_WINDOW_CONTROL_BACKGROUND_RESTORED_H;
395    pressed_background_id =
396        IDR_ASH_BROWSER_WINDOW_CONTROL_BACKGROUND_RESTORED_P;
397  }
398  caption_button_container_->SetButtonImages(
399      ash::CAPTION_BUTTON_ICON_MINIMIZE,
400      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_MINIMIZE,
401      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_MINIMIZE,
402      hover_background_id,
403      pressed_background_id);
404  caption_button_container_->SetButtonImages(
405      ash::CAPTION_BUTTON_ICON_MAXIMIZE_RESTORE,
406      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_SIZE,
407      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_SIZE,
408      hover_background_id,
409      pressed_background_id);
410  caption_button_container_->SetButtonImages(
411      ash::CAPTION_BUTTON_ICON_CLOSE,
412      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_CLOSE,
413      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_CLOSE,
414      hover_background_id,
415      pressed_background_id);
416  caption_button_container_->SetButtonImages(
417      ash::CAPTION_BUTTON_ICON_LEFT_SNAPPED,
418      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_LEFT_SNAPPED,
419      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_LEFT_SNAPPED,
420      hover_background_id,
421      pressed_background_id);
422  caption_button_container_->SetButtonImages(
423      ash::CAPTION_BUTTON_ICON_RIGHT_SNAPPED,
424      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_RIGHT_SNAPPED,
425      IDR_ASH_BROWSER_WINDOW_CONTROL_ICON_RIGHT_SNAPPED,
426      hover_background_id,
427      pressed_background_id);
428}
429
430gfx::Rect BrowserHeaderPainterAsh::GetPaintedBounds() const {
431  return gfx::Rect(view_->width(), painted_height_);
432}
433
434gfx::Rect BrowserHeaderPainterAsh::GetTitleBounds() const {
435  return ash::HeaderPainterUtil::GetTitleBounds(window_icon_,
436      caption_button_container_, BrowserFrame::GetTitleFontList());
437}
438