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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 "ui/views/controls/tabbed_pane/native_tabbed_pane_win.h" | |
6 | |
7 #include <vssym32.h> | |
8 | |
9 #include "base/logging.h" | |
10 #include "base/stl_util.h" | |
11 #include "ui/base/l10n/l10n_util_win.h" | |
12 #include "ui/base/resource/resource_bundle.h" | |
13 #include "ui/base/win/hwnd_util.h" | |
14 #include "ui/gfx/canvas.h" | |
15 #include "ui/gfx/font.h" | |
16 #include "ui/native_theme/native_theme_win.h" | |
17 #include "ui/views/controls/tabbed_pane/tabbed_pane.h" | |
18 #include "ui/views/controls/tabbed_pane/tabbed_pane_listener.h" | |
19 #include "ui/views/layout/fill_layout.h" | |
20 #include "ui/views/widget/root_view.h" | |
21 #include "ui/views/widget/widget.h" | |
22 | |
23 namespace views { | |
24 | |
25 // A background object that paints the tab panel background which may be | |
26 // rendered by the system visual styles system. | |
27 class TabBackground : public Background { | |
28 public: | |
29 explicit TabBackground() { | |
30 // TMT_FILLCOLORHINT returns a color value that supposedly | |
31 // approximates the texture drawn by PaintTabPanelBackground. | |
32 SkColor tab_page_color = | |
33 ui::NativeThemeWin::instance()->GetThemeColorWithDefault( | |
34 ui::NativeThemeWin::TAB, TABP_BODY, 0, TMT_FILLCOLORHINT, | |
35 COLOR_3DFACE); | |
36 SetNativeControlColor(tab_page_color); | |
37 } | |
38 virtual ~TabBackground() {} | |
39 | |
40 virtual void Paint(gfx::Canvas* canvas, View* view) const { | |
41 gfx::Rect r(0, 0, view->width(), view->height()); | |
42 ui::NativeTheme::ExtraParams extra; | |
43 ui::NativeTheme::instance()->Paint( | |
44 canvas->sk_canvas(), ui::NativeTheme::kTabPanelBackground, | |
45 ui::NativeTheme::kNormal, r, extra); | |
46 } | |
47 | |
48 private: | |
49 DISALLOW_COPY_AND_ASSIGN(TabBackground); | |
50 }; | |
51 | |
52 // Custom layout manager that takes care of sizing and displaying the tab pages. | |
53 class TabLayout : public LayoutManager { | |
54 public: | |
55 TabLayout() {} | |
56 | |
57 // Switches to the tab page identified by the given index. | |
58 void SwitchToPage(View* host, View* page) { | |
59 for (int i = 0; i < host->child_count(); ++i) { | |
60 View* child = host->child_at(i); | |
61 // The child might not have been laid out yet. | |
62 if (child == page) | |
63 child->SetBoundsRect(host->GetContentsBounds()); | |
64 child->SetVisible(child == page); | |
65 } | |
66 | |
67 FocusManager* focus_manager = page->GetFocusManager(); | |
68 DCHECK(focus_manager); | |
69 const View* focused_view = focus_manager->GetFocusedView(); | |
70 if (focused_view && host->Contains(focused_view) && | |
71 !page->Contains(focused_view)) | |
72 focus_manager->SetFocusedView(page); | |
73 } | |
74 | |
75 private: | |
76 // LayoutManager overrides: | |
77 virtual void Layout(View* host) { | |
78 gfx::Rect bounds(host->GetContentsBounds()); | |
79 for (int i = 0; i < host->child_count(); ++i) { | |
80 View* child = host->child_at(i); | |
81 // We only layout visible children, since it may be expensive. | |
82 if (child->visible() && child->bounds() != bounds) | |
83 child->SetBoundsRect(bounds); | |
84 } | |
85 } | |
86 | |
87 virtual gfx::Size GetPreferredSize(View* host) { | |
88 // First, query the preferred sizes to determine a good width. | |
89 int width = 0; | |
90 for (int i = 0; i < host->child_count(); ++i) { | |
91 View* page = host->child_at(i); | |
92 width = std::max(width, page->GetPreferredSize().width()); | |
93 } | |
94 // After we know the width, decide on the height. | |
95 return gfx::Size(width, GetPreferredHeightForWidth(host, width)); | |
96 } | |
97 | |
98 virtual int GetPreferredHeightForWidth(View* host, int width) { | |
99 int height = 0; | |
100 for (int i = 0; i < host->child_count(); ++i) { | |
101 View* page = host->child_at(i); | |
102 height = std::max(height, page->GetHeightForWidth(width)); | |
103 } | |
104 return height; | |
105 } | |
106 | |
107 DISALLOW_COPY_AND_ASSIGN(TabLayout); | |
108 }; | |
109 | |
110 //////////////////////////////////////////////////////////////////////////////// | |
111 // NativeTabbedPaneWin, public: | |
112 | |
113 NativeTabbedPaneWin::NativeTabbedPaneWin(TabbedPane* tabbed_pane) | |
114 : NativeControlWin(), | |
115 tabbed_pane_(tabbed_pane), | |
116 tab_layout_manager_(NULL), | |
117 content_window_(NULL), | |
118 selected_index_(-1) { | |
119 // Associates the actual HWND with the tabbed-pane so the tabbed-pane is | |
120 // the one considered as having the focus (not the wrapper) when the HWND is | |
121 // focused directly (with a click for example). | |
122 set_focus_view(tabbed_pane); | |
123 } | |
124 | |
125 NativeTabbedPaneWin::~NativeTabbedPaneWin() { | |
126 // We own the tab views, let's delete them. | |
127 STLDeleteContainerPointers(tab_views_.begin(), tab_views_.end()); | |
128 } | |
129 | |
130 //////////////////////////////////////////////////////////////////////////////// | |
131 // NativeTabbedPaneWin, NativeTabbedPaneWrapper implementation: | |
132 | |
133 void NativeTabbedPaneWin::AddTab(const string16& title, View* contents) { | |
134 AddTabAtIndex(static_cast<int>(tab_views_.size()), title, contents, true); | |
135 } | |
136 | |
137 void NativeTabbedPaneWin::AddTabAtIndex(int index, | |
138 const string16& title, | |
139 View* contents, | |
140 bool select_if_first_tab) { | |
141 DCHECK(index <= static_cast<int>(tab_views_.size())); | |
142 contents->set_owned_by_client(); | |
143 contents->SetVisible(false); | |
144 tab_views_.insert(tab_views_.begin() + index, contents); | |
145 tab_titles_.insert(tab_titles_.begin() + index, title); | |
146 | |
147 if (!contents->background()) | |
148 contents->set_background(new TabBackground); | |
149 | |
150 if (tab_views_.size() == 1 && select_if_first_tab) | |
151 selected_index_ = 0; | |
152 | |
153 // Add native tab only if the native control is alreay created. | |
154 if (content_window_) { | |
155 AddNativeTab(index, title); | |
156 // The newly added tab may have made the contents window smaller. | |
157 ResizeContents(); | |
158 | |
159 View* content_root = content_window_->GetRootView(); | |
160 content_root->AddChildView(contents); | |
161 // Switch to the newly added tab if requested; | |
162 if (tab_views_.size() == 1 && select_if_first_tab) | |
163 tab_layout_manager_->SwitchToPage(content_root, contents); | |
164 } | |
165 } | |
166 | |
167 void NativeTabbedPaneWin::AddNativeTab(int index, const string16& title) { | |
168 TCITEM tcitem; | |
169 tcitem.mask = TCIF_TEXT; | |
170 | |
171 // If the locale is RTL, we set the TCIF_RTLREADING so that BiDi text is | |
172 // rendered properly on the tabs. | |
173 if (base::i18n::IsRTL()) { | |
174 tcitem.mask |= TCIF_RTLREADING; | |
175 } | |
176 | |
177 tcitem.pszText = const_cast<wchar_t*>(title.c_str()); | |
178 int result = TabCtrl_InsertItem(native_view(), index, &tcitem); | |
179 DCHECK(result != -1); | |
180 } | |
181 | |
182 View* NativeTabbedPaneWin::RemoveTabAtIndex(int index) { | |
183 int tab_count = static_cast<int>(tab_views_.size()); | |
184 DCHECK(index >= 0 && index < tab_count); | |
185 | |
186 if (index < (tab_count - 1)) { | |
187 // Select the next tab. | |
188 SelectTabAt(index + 1); | |
189 } else { | |
190 // We are the last tab, select the previous one. | |
191 if (index > 0) { | |
192 SelectTabAt(index - 1); | |
193 } else if (content_window_) { | |
194 // That was the last tab. Remove the contents. | |
195 content_window_->GetRootView()->RemoveAllChildViews(false); | |
196 } | |
197 } | |
198 TabCtrl_DeleteItem(native_view(), index); | |
199 | |
200 // The removed tab may have made the contents window bigger. | |
201 if (content_window_) | |
202 ResizeContents(); | |
203 | |
204 std::vector<View*>::iterator iter = tab_views_.begin() + index; | |
205 View* removed_tab = *iter; | |
206 if (content_window_) | |
207 content_window_->GetRootView()->RemoveChildView(removed_tab); | |
208 tab_views_.erase(iter); | |
209 tab_titles_.erase(tab_titles_.begin() + index); | |
210 | |
211 return removed_tab; | |
212 } | |
213 | |
214 void NativeTabbedPaneWin::SelectTabAt(int index) { | |
215 DCHECK((index >= 0) && (index < static_cast<int>(tab_views_.size()))); | |
216 if (native_view()) | |
217 TabCtrl_SetCurSel(native_view(), index); | |
218 DoSelectTabAt(index, true); | |
219 } | |
220 | |
221 int NativeTabbedPaneWin::GetTabCount() { | |
222 return TabCtrl_GetItemCount(native_view()); | |
223 } | |
224 | |
225 int NativeTabbedPaneWin::GetSelectedTabIndex() { | |
226 return TabCtrl_GetCurSel(native_view()); | |
227 } | |
228 | |
229 View* NativeTabbedPaneWin::GetSelectedTab() { | |
230 if (selected_index_ < 0) | |
231 return NULL; | |
232 return tab_views_[selected_index_]; | |
233 } | |
234 | |
235 View* NativeTabbedPaneWin::GetView() { | |
236 return this; | |
237 } | |
238 | |
239 void NativeTabbedPaneWin::SetFocus() { | |
240 // Focus the associated HWND. | |
241 OnFocus(); | |
242 } | |
243 | |
244 gfx::Size NativeTabbedPaneWin::GetPreferredSize() { | |
245 if (!native_view()) | |
246 return gfx::Size(); | |
247 | |
248 gfx::Rect contentSize(content_window_->GetRootView()->GetPreferredSize()); | |
249 RECT paneSize = { 0, 0, contentSize.width(), contentSize.height() }; | |
250 TabCtrl_AdjustRect(native_view(), TRUE, &paneSize); | |
251 return gfx::Size(paneSize.right - paneSize.left, | |
252 paneSize.bottom - paneSize.top); | |
253 } | |
254 | |
255 gfx::NativeView NativeTabbedPaneWin::GetTestingHandle() const { | |
256 return native_view(); | |
257 } | |
258 | |
259 //////////////////////////////////////////////////////////////////////////////// | |
260 // NativeTabbedPaneWin, NativeControlWin override: | |
261 | |
262 void NativeTabbedPaneWin::CreateNativeControl() { | |
263 // Create the tab control. | |
264 // | |
265 // Note that we don't follow the common convention for NativeControl | |
266 // subclasses and we don't pass the value returned from | |
267 // NativeControl::GetAdditionalExStyle() as the dwExStyle parameter. Here is | |
268 // why: on RTL locales, if we pass NativeControl::GetAdditionalExStyle() when | |
269 // we basically tell Windows to create our HWND with the WS_EX_LAYOUTRTL. If | |
270 // we do that, then the HWND we create for |content_window_| below will | |
271 // inherit the WS_EX_LAYOUTRTL property and this will result in the contents | |
272 // being flipped, which is not what we want (because we handle mirroring in | |
273 // views without the use of Windows' support for mirroring). Therefore, | |
274 // we initially create our HWND without WS_EX_LAYOUTRTL and we explicitly set | |
275 // this property our child is created. This way, on RTL locales, our tabs | |
276 // will be nicely rendered from right to left (by virtue of Windows doing the | |
277 // right thing with the TabbedPane HWND) and each tab contents will use an | |
278 // RTL layout correctly (by virtue of the mirroring infrastructure in views | |
279 // doing the right thing with each View we put in the tab). | |
280 DWORD style = WS_CHILD | WS_CLIPSIBLINGS | WS_VISIBLE | WS_CLIPCHILDREN; | |
281 HWND tab_control = ::CreateWindowEx(0, | |
282 WC_TABCONTROL, | |
283 L"", | |
284 style, | |
285 0, 0, width(), height(), | |
286 GetWidget()->GetNativeView(), NULL, NULL, | |
287 NULL); | |
288 ui::CheckWindowCreated(tab_control); | |
289 | |
290 HFONT font = ResourceBundle::GetSharedInstance(). | |
291 GetFont(ResourceBundle::BaseFont).GetNativeFont(); | |
292 SendMessage(tab_control, WM_SETFONT, reinterpret_cast<WPARAM>(font), FALSE); | |
293 | |
294 // Create the view container which is a child of the TabControl. | |
295 content_window_ = new Widget; | |
296 Widget::InitParams params(Widget::InitParams::TYPE_CONTROL); | |
297 params.parent = tab_control; | |
298 content_window_->Init(params); | |
299 | |
300 // Explicitly setting the WS_EX_LAYOUTRTL property for the HWND (see above | |
301 // for why we waited until |content_window_| is created before we set this | |
302 // property for the tabbed pane's HWND). | |
303 if (base::i18n::IsRTL()) | |
304 l10n_util::HWNDSetRTLLayout(tab_control); | |
305 | |
306 View* root_view = content_window_->GetRootView(); | |
307 tab_layout_manager_ = new TabLayout(); | |
308 root_view->SetLayoutManager(tab_layout_manager_); | |
309 DWORD sys_color = ::GetSysColor(COLOR_3DHILIGHT); | |
310 SkColor color = SkColorSetRGB(GetRValue(sys_color), GetGValue(sys_color), | |
311 GetBValue(sys_color)); | |
312 root_view->set_background(Background::CreateSolidBackground(color)); | |
313 | |
314 content_window_->SetFocusTraversableParentView(this); | |
315 | |
316 NativeControlCreated(tab_control); | |
317 | |
318 // Add tabs that are already added if any. | |
319 if (!tab_views_.empty()) { | |
320 InitializeTabs(); | |
321 if (selected_index_ >= 0) | |
322 DoSelectTabAt(selected_index_, false); | |
323 } | |
324 | |
325 ResizeContents(); | |
326 } | |
327 | |
328 bool NativeTabbedPaneWin::ProcessMessage(UINT message, | |
329 WPARAM w_param, | |
330 LPARAM l_param, | |
331 LRESULT* result) { | |
332 if (message == WM_NOTIFY && | |
333 reinterpret_cast<LPNMHDR>(l_param)->code == TCN_SELCHANGE) { | |
334 int selected_tab = TabCtrl_GetCurSel(native_view()); | |
335 DCHECK(selected_tab != -1); | |
336 DoSelectTabAt(selected_tab, true); | |
337 return TRUE; | |
338 } | |
339 return NativeControlWin::ProcessMessage(message, w_param, l_param, result); | |
340 } | |
341 | |
342 //////////////////////////////////////////////////////////////////////////////// | |
343 // View override: | |
344 | |
345 void NativeTabbedPaneWin::Layout() { | |
346 NativeControlWin::Layout(); | |
347 ResizeContents(); | |
348 } | |
349 | |
350 FocusTraversable* NativeTabbedPaneWin::GetFocusTraversable() { | |
351 return content_window_; | |
352 } | |
353 | |
354 void NativeTabbedPaneWin::ViewHierarchyChanged(bool is_add, | |
355 View *parent, | |
356 View *child) { | |
357 NativeControlWin::ViewHierarchyChanged(is_add, parent, child); | |
358 | |
359 if (is_add && (child == this) && content_window_) { | |
360 // We have been added to a view hierarchy, update the FocusTraversable | |
361 // parent. | |
362 content_window_->SetFocusTraversableParent( | |
363 GetWidget()->GetFocusTraversable()); | |
364 } | |
365 } | |
366 | |
367 //////////////////////////////////////////////////////////////////////////////// | |
368 // NativeTabbedPaneWin, private: | |
369 | |
370 void NativeTabbedPaneWin::InitializeTabs() { | |
371 for (size_t i = 0; i < tab_titles_.size(); ++i) | |
372 AddNativeTab(i, tab_titles_[i]); | |
373 | |
374 View* content_root = content_window_->GetRootView(); | |
375 for (std::vector<View*>::iterator tab(tab_views_.begin()); | |
376 tab != tab_views_.end(); ++tab) | |
377 content_root->AddChildView(*tab); | |
378 } | |
379 | |
380 void NativeTabbedPaneWin::DoSelectTabAt(int index, boolean invoke_listener) { | |
381 selected_index_ = index; | |
382 if (content_window_) { | |
383 View* content_root = content_window_->GetRootView(); | |
384 tab_layout_manager_->SwitchToPage(content_root, tab_views_[index]); | |
385 } | |
386 if (invoke_listener && tabbed_pane_->listener()) | |
387 tabbed_pane_->listener()->TabSelectedAt(index); | |
388 } | |
389 | |
390 void NativeTabbedPaneWin::ResizeContents() { | |
391 RECT content_bounds; | |
392 if (!GetClientRect(native_view(), &content_bounds)) | |
393 return; | |
394 TabCtrl_AdjustRect(native_view(), FALSE, &content_bounds); | |
395 content_window_->SetBounds(gfx::Rect(content_bounds)); | |
396 } | |
397 | |
398 } // namespace views | |
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