1 | /* |
2 | * Copyright (C) 2016 Igalia S.L. |
3 | * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
8 | * 1. Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
13 | * |
14 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | */ |
26 | |
27 | #include "config.h" |
28 | #include "ScrollbarThemeGtk.h" |
29 | |
30 | #include "GRefPtrGtk.h" |
31 | #include "PlatformContextCairo.h" |
32 | #include "PlatformMouseEvent.h" |
33 | #include "RenderThemeWidget.h" |
34 | #include "ScrollView.h" |
35 | #include "Scrollbar.h" |
36 | #include <cstdlib> |
37 | #include <gtk/gtk.h> |
38 | |
39 | namespace WebCore { |
40 | |
41 | ScrollbarTheme& ScrollbarTheme::nativeTheme() |
42 | { |
43 | static ScrollbarThemeGtk theme; |
44 | return theme; |
45 | } |
46 | |
47 | ScrollbarThemeGtk::~ScrollbarThemeGtk() = default; |
48 | |
49 | #ifndef GTK_API_VERSION_2 |
50 | static void themeChangedCallback() |
51 | { |
52 | ScrollbarTheme::theme().themeChanged(); |
53 | } |
54 | |
55 | ScrollbarThemeGtk::ScrollbarThemeGtk() |
56 | { |
57 | #if GTK_CHECK_VERSION(3, 20, 0) |
58 | m_usesOverlayScrollbars = g_strcmp0(g_getenv("GTK_OVERLAY_SCROLLING" ), "0" ); |
59 | #endif |
60 | static bool themeMonitorInitialized = false; |
61 | if (!themeMonitorInitialized) { |
62 | g_signal_connect(gtk_settings_get_default(), "notify::gtk-theme-name" , G_CALLBACK(themeChangedCallback), nullptr); |
63 | themeMonitorInitialized = true; |
64 | updateThemeProperties(); |
65 | } |
66 | } |
67 | |
68 | #if !GTK_CHECK_VERSION(3, 20, 0) |
69 | static GRefPtr<GtkStyleContext> createStyleContext(Scrollbar* scrollbar = nullptr) |
70 | { |
71 | GRefPtr<GtkStyleContext> styleContext = adoptGRef(gtk_style_context_new()); |
72 | GRefPtr<GtkWidgetPath> path = adoptGRef(gtk_widget_path_new()); |
73 | gtk_widget_path_append_type(path.get(), GTK_TYPE_SCROLLBAR); |
74 | gtk_widget_path_iter_add_class(path.get(), -1, GTK_STYLE_CLASS_SCROLLBAR); |
75 | gtk_widget_path_iter_add_class(path.get(), -1, scrollbar && scrollbar->orientation() == HorizontalScrollbar ? "horizontal" : "vertical" ); |
76 | gtk_style_context_set_path(styleContext.get(), path.get()); |
77 | return styleContext; |
78 | } |
79 | |
80 | static GRefPtr<GtkStyleContext> createChildStyleContext(GtkStyleContext* parent, const char* className) |
81 | { |
82 | ASSERT(parent); |
83 | GRefPtr<GtkWidgetPath> path = adoptGRef(gtk_widget_path_copy(gtk_style_context_get_path(parent))); |
84 | gtk_widget_path_append_type(path.get(), GTK_TYPE_SCROLLBAR); |
85 | gtk_widget_path_iter_add_class(path.get(), -1, GTK_STYLE_CLASS_SCROLLBAR); |
86 | gtk_widget_path_iter_add_class(path.get(), -1, className); |
87 | |
88 | GRefPtr<GtkStyleContext> styleContext = adoptGRef(gtk_style_context_new()); |
89 | gtk_style_context_set_path(styleContext.get(), path.get()); |
90 | gtk_style_context_set_parent(styleContext.get(), parent); |
91 | return styleContext; |
92 | } |
93 | #endif // GTK_CHECK_VERSION(3, 20, 0) |
94 | |
95 | void ScrollbarThemeGtk::themeChanged() |
96 | { |
97 | #if GTK_CHECK_VERSION(3, 20, 0) |
98 | RenderThemeWidget::clearCache(); |
99 | #endif |
100 | updateThemeProperties(); |
101 | } |
102 | |
103 | #if GTK_CHECK_VERSION(3, 20, 0) |
104 | void ScrollbarThemeGtk::updateThemeProperties() |
105 | { |
106 | auto& scrollbar = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(RenderThemeWidget::Type::VerticalScrollbarRight)); |
107 | m_hasBackButtonStartPart = scrollbar.stepper(RenderThemeScrollbarGadget::Steppers::Backward); |
108 | m_hasForwardButtonEndPart = scrollbar.stepper(RenderThemeScrollbarGadget::Steppers::Forward); |
109 | m_hasBackButtonEndPart = scrollbar.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryBackward); |
110 | m_hasForwardButtonStartPart = scrollbar.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryForward); |
111 | } |
112 | #else |
113 | void ScrollbarThemeGtk::updateThemeProperties() |
114 | { |
115 | gboolean hasBackButtonStartPart, hasForwardButtonEndPart, hasBackButtonEndPart, hasForwardButtonStartPart; |
116 | gtk_style_context_get_style(createStyleContext().get(), |
117 | "has-backward-stepper" , &hasBackButtonStartPart, |
118 | "has-forward-stepper" , &hasForwardButtonEndPart, |
119 | "has-secondary-backward-stepper" , &hasBackButtonEndPart, |
120 | "has-secondary-forward-stepper" , &hasForwardButtonStartPart, |
121 | nullptr); |
122 | m_hasBackButtonStartPart = hasBackButtonStartPart; |
123 | m_hasForwardButtonEndPart = hasForwardButtonEndPart; |
124 | m_hasBackButtonEndPart = hasBackButtonEndPart; |
125 | m_hasForwardButtonStartPart = hasForwardButtonStartPart; |
126 | } |
127 | #endif // GTK_CHECK_VERSION(3, 20, 0) |
128 | |
129 | bool ScrollbarThemeGtk::hasButtons(Scrollbar& scrollbar) |
130 | { |
131 | return scrollbar.enabled() && (m_hasBackButtonStartPart || m_hasForwardButtonEndPart || m_hasBackButtonEndPart || m_hasForwardButtonStartPart); |
132 | } |
133 | |
134 | #if GTK_CHECK_VERSION(3, 20, 0) |
135 | static GtkStateFlags scrollbarPartStateFlags(Scrollbar& scrollbar, ScrollbarPart part, bool painting = false) |
136 | { |
137 | unsigned stateFlags = 0; |
138 | switch (part) { |
139 | case AllParts: |
140 | if (!painting || scrollbar.hoveredPart() != NoPart) |
141 | stateFlags |= GTK_STATE_FLAG_PRELIGHT; |
142 | break; |
143 | case BackTrackPart: |
144 | case ForwardTrackPart: |
145 | if (scrollbar.hoveredPart() == BackTrackPart || scrollbar.hoveredPart() == ForwardTrackPart) |
146 | stateFlags |= GTK_STATE_FLAG_PRELIGHT; |
147 | if (scrollbar.pressedPart() == BackTrackPart || scrollbar.pressedPart() == ForwardTrackPart) |
148 | stateFlags |= GTK_STATE_FLAG_ACTIVE; |
149 | break; |
150 | case BackButtonStartPart: |
151 | case ForwardButtonStartPart: |
152 | case BackButtonEndPart: |
153 | case ForwardButtonEndPart: |
154 | if (((part == BackButtonStartPart || part == BackButtonEndPart) && !scrollbar.currentPos()) |
155 | || ((part == ForwardButtonEndPart || part == ForwardButtonStartPart) && scrollbar.currentPos() == scrollbar.maximum())) { |
156 | stateFlags |= GTK_STATE_FLAG_INSENSITIVE; |
157 | break; |
158 | } |
159 | FALLTHROUGH; |
160 | default: |
161 | if (scrollbar.hoveredPart() == part) |
162 | stateFlags |= GTK_STATE_FLAG_PRELIGHT; |
163 | |
164 | if (scrollbar.pressedPart() == part) |
165 | stateFlags |= GTK_STATE_FLAG_ACTIVE; |
166 | break; |
167 | } |
168 | |
169 | return static_cast<GtkStateFlags>(stateFlags); |
170 | } |
171 | |
172 | static RenderThemeWidget::Type widgetTypeForScrollbar(Scrollbar& scrollbar, GtkStateFlags scrollbarState) |
173 | { |
174 | if (scrollbar.orientation() == VerticalScrollbar) { |
175 | if (scrollbar.scrollableArea().shouldPlaceBlockDirectionScrollbarOnLeft()) |
176 | return scrollbarState & GTK_STATE_FLAG_PRELIGHT ? RenderThemeWidget::Type::VerticalScrollbarLeft : RenderThemeWidget::Type::VerticalScrollIndicatorLeft; |
177 | return scrollbarState & GTK_STATE_FLAG_PRELIGHT ? RenderThemeWidget::Type::VerticalScrollbarRight : RenderThemeWidget::Type::VerticalScrollIndicatorRight; |
178 | } |
179 | return scrollbarState & GTK_STATE_FLAG_PRELIGHT ? RenderThemeWidget::Type::HorizontalScrollbar : RenderThemeWidget::Type::HorizontalScrollIndicator; |
180 | } |
181 | |
182 | static IntRect contentsRectangle(Scrollbar& scrollbar, RenderThemeScrollbar& scrollbarWidget) |
183 | { |
184 | GtkBorder scrollbarContentsBox = scrollbarWidget.scrollbar().contentsBox(); |
185 | GtkBorder contentsContentsBox = scrollbarWidget.contents().contentsBox(); |
186 | GtkBorder padding; |
187 | padding.left = scrollbarContentsBox.left + contentsContentsBox.left; |
188 | padding.right = scrollbarContentsBox.right + contentsContentsBox.right; |
189 | padding.top = scrollbarContentsBox.top + contentsContentsBox.top; |
190 | padding.bottom = scrollbarContentsBox.bottom + contentsContentsBox.bottom; |
191 | IntRect contentsRect = scrollbar.frameRect(); |
192 | contentsRect.move(padding.left, padding.top); |
193 | contentsRect.contract(padding.left + padding.right, padding.top + padding.bottom); |
194 | return contentsRect; |
195 | } |
196 | |
197 | IntRect ScrollbarThemeGtk::trackRect(Scrollbar& scrollbar, bool /*painting*/) |
198 | { |
199 | auto scrollbarState = scrollbarPartStateFlags(scrollbar, AllParts); |
200 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(widgetTypeForScrollbar(scrollbar, scrollbarState))); |
201 | scrollbarWidget.scrollbar().setState(scrollbarState); |
202 | |
203 | IntRect rect = contentsRectangle(scrollbar, scrollbarWidget); |
204 | if (auto* backwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Backward)) { |
205 | backwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonStartPart)); |
206 | IntSize stepperSize = backwardStepper->preferredSize(); |
207 | if (scrollbar.orientation() == VerticalScrollbar) { |
208 | rect.move(0, stepperSize.height()); |
209 | rect.contract(0, stepperSize.height()); |
210 | } else { |
211 | rect.move(stepperSize.width(), 0); |
212 | rect.contract(stepperSize.width(), 0); |
213 | } |
214 | } |
215 | if (auto* secondaryForwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryForward)) { |
216 | secondaryForwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonStartPart)); |
217 | IntSize stepperSize = secondaryForwardStepper->preferredSize(); |
218 | if (scrollbar.orientation() == VerticalScrollbar) { |
219 | rect.move(0, stepperSize.height()); |
220 | rect.contract(0, stepperSize.height()); |
221 | } else { |
222 | rect.move(stepperSize.width(), 0); |
223 | rect.contract(stepperSize.width(), 0); |
224 | } |
225 | } |
226 | if (auto* secondaryBackwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryBackward)) { |
227 | secondaryBackwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonEndPart)); |
228 | if (scrollbar.orientation() == VerticalScrollbar) |
229 | rect.contract(0, secondaryBackwardStepper->preferredSize().height()); |
230 | else |
231 | rect.contract(secondaryBackwardStepper->preferredSize().width(), 0); |
232 | } |
233 | if (auto* forwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Forward)) { |
234 | forwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonEndPart)); |
235 | if (scrollbar.orientation() == VerticalScrollbar) |
236 | rect.contract(0, forwardStepper->preferredSize().height()); |
237 | else |
238 | rect.contract(forwardStepper->preferredSize().width(), 0); |
239 | } |
240 | |
241 | if (scrollbar.orientation() == VerticalScrollbar) |
242 | return scrollbar.height() < rect.height() ? IntRect() : rect; |
243 | |
244 | return scrollbar.width() < rect.width() ? IntRect() : rect; |
245 | } |
246 | #else |
247 | IntRect ScrollbarThemeGtk::trackRect(Scrollbar& scrollbar, bool /*painting*/) |
248 | { |
249 | GRefPtr<GtkStyleContext> styleContext = createStyleContext(&scrollbar); |
250 | // The padding along the thumb movement axis includes the trough border |
251 | // plus the size of stepper spacing (the space between the stepper and |
252 | // the place where the thumb stops). There is often no stepper spacing. |
253 | int stepperSpacing, stepperSize, troughBorderWidth, thumbFat; |
254 | gtk_style_context_get_style(styleContext.get(), "stepper-spacing" , &stepperSpacing, "stepper-size" , &stepperSize, "trough-border" , |
255 | &troughBorderWidth, "slider-width" , &thumbFat, nullptr); |
256 | |
257 | // The fatness of the scrollbar on the non-movement axis. |
258 | int thickness = thumbFat + 2 * troughBorderWidth; |
259 | |
260 | int startButtonsOffset = 0; |
261 | int buttonsWidth = 0; |
262 | if (m_hasForwardButtonStartPart) { |
263 | startButtonsOffset += stepperSize; |
264 | buttonsWidth += stepperSize; |
265 | } |
266 | if (m_hasBackButtonStartPart) { |
267 | startButtonsOffset += stepperSize; |
268 | buttonsWidth += stepperSize; |
269 | } |
270 | if (m_hasBackButtonEndPart) |
271 | buttonsWidth += stepperSize; |
272 | if (m_hasForwardButtonEndPart) |
273 | buttonsWidth += stepperSize; |
274 | |
275 | if (scrollbar.orientation() == HorizontalScrollbar) { |
276 | // Once the scrollbar becomes smaller than the natural size of the two buttons and the thumb, the track disappears. |
277 | if (scrollbar.width() < buttonsWidth + minimumThumbLength(scrollbar)) |
278 | return IntRect(); |
279 | return IntRect(scrollbar.x() + troughBorderWidth + stepperSpacing + startButtonsOffset, scrollbar.y(), |
280 | scrollbar.width() - (2 * troughBorderWidth) - (2 * stepperSpacing) - buttonsWidth, thickness); |
281 | } |
282 | |
283 | if (scrollbar.height() < buttonsWidth + minimumThumbLength(scrollbar)) |
284 | return IntRect(); |
285 | return IntRect(scrollbar.x(), scrollbar.y() + troughBorderWidth + stepperSpacing + startButtonsOffset, |
286 | thickness, scrollbar.height() - (2 * troughBorderWidth) - (2 * stepperSpacing) - buttonsWidth); |
287 | } |
288 | #endif |
289 | |
290 | bool ScrollbarThemeGtk::hasThumb(Scrollbar& scrollbar) |
291 | { |
292 | // This method is just called as a paint-time optimization to see if |
293 | // painting the thumb can be skipped. We don't have to be exact here. |
294 | return thumbLength(scrollbar) > 0; |
295 | } |
296 | |
297 | #if GTK_CHECK_VERSION(3, 20, 0) |
298 | IntRect ScrollbarThemeGtk::backButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool /*painting*/) |
299 | { |
300 | ASSERT(part == BackButtonStartPart || part == BackButtonEndPart); |
301 | if ((part == BackButtonEndPart && !m_hasBackButtonEndPart) || (part == BackButtonStartPart && !m_hasBackButtonStartPart)) |
302 | return IntRect(); |
303 | |
304 | auto scrollbarState = scrollbarPartStateFlags(scrollbar, AllParts); |
305 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(widgetTypeForScrollbar(scrollbar, scrollbarState))); |
306 | scrollbarWidget.scrollbar().setState(scrollbarState); |
307 | |
308 | IntRect rect = contentsRectangle(scrollbar, scrollbarWidget); |
309 | if (part == BackButtonStartPart) { |
310 | auto* backwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Backward); |
311 | ASSERT(backwardStepper); |
312 | backwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonStartPart)); |
313 | return IntRect(rect.location(), backwardStepper->preferredSize()); |
314 | } |
315 | |
316 | if (auto* secondaryForwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryForward)) { |
317 | secondaryForwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonStartPart)); |
318 | IntSize preferredSize = secondaryForwardStepper->preferredSize(); |
319 | if (scrollbar.orientation() == VerticalScrollbar) { |
320 | rect.move(0, preferredSize.height()); |
321 | rect.contract(0, preferredSize.height()); |
322 | } else { |
323 | rect.move(preferredSize.width(), 0); |
324 | rect.contract(0, preferredSize.width()); |
325 | } |
326 | } |
327 | |
328 | if (auto* secondaryBackwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryBackward)) { |
329 | secondaryBackwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonEndPart)); |
330 | if (scrollbar.orientation() == VerticalScrollbar) |
331 | rect.contract(0, secondaryBackwardStepper->preferredSize().height()); |
332 | else |
333 | rect.contract(secondaryBackwardStepper->preferredSize().width(), 0); |
334 | } |
335 | |
336 | auto* forwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Forward); |
337 | ASSERT(forwardStepper); |
338 | forwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonEndPart)); |
339 | IntSize preferredSize = forwardStepper->preferredSize(); |
340 | if (scrollbar.orientation() == VerticalScrollbar) |
341 | rect.move(0, rect.height() - preferredSize.height()); |
342 | else |
343 | rect.move(rect.width() - preferredSize.width(), 0); |
344 | |
345 | return IntRect(rect.location(), preferredSize); |
346 | } |
347 | |
348 | IntRect ScrollbarThemeGtk::forwardButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool /*painting*/) |
349 | { |
350 | ASSERT(part == ForwardButtonStartPart || part == ForwardButtonEndPart); |
351 | if ((part == ForwardButtonStartPart && !m_hasForwardButtonStartPart) || (part == ForwardButtonEndPart && !m_hasForwardButtonEndPart)) |
352 | return IntRect(); |
353 | |
354 | auto scrollbarState = scrollbarPartStateFlags(scrollbar, AllParts); |
355 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(widgetTypeForScrollbar(scrollbar, scrollbarState))); |
356 | scrollbarWidget.scrollbar().setState(scrollbarState); |
357 | |
358 | IntRect rect = contentsRectangle(scrollbar, scrollbarWidget); |
359 | if (auto* backwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Backward)) { |
360 | backwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonStartPart)); |
361 | IntSize preferredSize = backwardStepper->preferredSize(); |
362 | if (scrollbar.orientation() == VerticalScrollbar) { |
363 | rect.move(0, preferredSize.height()); |
364 | rect.contract(0, preferredSize.height()); |
365 | } else { |
366 | rect.move(preferredSize.width(), 0); |
367 | rect.contract(preferredSize.width(), 0); |
368 | } |
369 | } |
370 | |
371 | if (auto* secondaryForwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryForward)) { |
372 | secondaryForwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonStartPart)); |
373 | IntSize preferredSize = secondaryForwardStepper->preferredSize(); |
374 | if (part == ForwardButtonStartPart) |
375 | return IntRect(rect.location(), preferredSize); |
376 | |
377 | if (scrollbar.orientation() == VerticalScrollbar) { |
378 | rect.move(0, preferredSize.height()); |
379 | rect.contract(0, preferredSize.height()); |
380 | } else { |
381 | rect.move(preferredSize.width(), 0); |
382 | rect.contract(preferredSize.width(), 0); |
383 | } |
384 | } |
385 | |
386 | auto* forwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Forward); |
387 | ASSERT(forwardStepper); |
388 | forwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonEndPart)); |
389 | IntSize preferredSize = forwardStepper->preferredSize(); |
390 | if (scrollbar.orientation() == VerticalScrollbar) |
391 | rect.move(0, rect.height() - preferredSize.height()); |
392 | else |
393 | rect.move(rect.width() - preferredSize.width(), 0); |
394 | |
395 | return IntRect(rect.location(), preferredSize); |
396 | } |
397 | #else |
398 | IntRect ScrollbarThemeGtk::backButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool /*painting*/) |
399 | { |
400 | if ((part == BackButtonEndPart && !m_hasBackButtonEndPart) || (part == BackButtonStartPart && !m_hasBackButtonStartPart)) |
401 | return IntRect(); |
402 | |
403 | GRefPtr<GtkStyleContext> styleContext = createStyleContext(&scrollbar); |
404 | int troughBorderWidth, stepperSize, thumbFat; |
405 | gtk_style_context_get_style(styleContext.get(), "trough-border" , &troughBorderWidth, "stepper-size" , &stepperSize, "slider-width" , &thumbFat, nullptr); |
406 | int x = scrollbar.x() + troughBorderWidth; |
407 | int y = scrollbar.y() + troughBorderWidth; |
408 | if (part == BackButtonStartPart) { |
409 | if (scrollbar.orientation() == HorizontalScrollbar) |
410 | return IntRect(x, y, stepperSize, thumbFat); |
411 | return IntRect(x, y, thumbFat, stepperSize); |
412 | } |
413 | |
414 | // BackButtonEndPart (alternate button) |
415 | if (scrollbar.orientation() == HorizontalScrollbar) |
416 | return IntRect(scrollbar.x() + scrollbar.width() - troughBorderWidth - (2 * stepperSize), y, stepperSize, thumbFat); |
417 | |
418 | // VerticalScrollbar alternate button |
419 | return IntRect(x, scrollbar.y() + scrollbar.height() - troughBorderWidth - (2 * stepperSize), thumbFat, stepperSize); |
420 | } |
421 | |
422 | IntRect ScrollbarThemeGtk::forwardButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool /*painting*/) |
423 | { |
424 | if ((part == ForwardButtonStartPart && !m_hasForwardButtonStartPart) || (part == ForwardButtonEndPart && !m_hasForwardButtonEndPart)) |
425 | return IntRect(); |
426 | |
427 | GRefPtr<GtkStyleContext> styleContext = createStyleContext(&scrollbar); |
428 | int troughBorderWidth, stepperSize, thumbFat; |
429 | gtk_style_context_get_style(styleContext.get(), "trough-border" , &troughBorderWidth, "stepper-size" , &stepperSize, "slider-width" , &thumbFat, nullptr); |
430 | if (scrollbar.orientation() == HorizontalScrollbar) { |
431 | int y = scrollbar.y() + troughBorderWidth; |
432 | if (part == ForwardButtonEndPart) |
433 | return IntRect(scrollbar.x() + scrollbar.width() - stepperSize - troughBorderWidth, y, stepperSize, thumbFat); |
434 | |
435 | // ForwardButtonStartPart (alternate button) |
436 | return IntRect(scrollbar.x() + troughBorderWidth + stepperSize, y, stepperSize, thumbFat); |
437 | } |
438 | |
439 | // VerticalScrollbar |
440 | int x = scrollbar.x() + troughBorderWidth; |
441 | if (part == ForwardButtonEndPart) |
442 | return IntRect(x, scrollbar.y() + scrollbar.height() - stepperSize - troughBorderWidth, thumbFat, stepperSize); |
443 | |
444 | // ForwardButtonStartPart (alternate button) |
445 | return IntRect(x, scrollbar.y() + troughBorderWidth + stepperSize, thumbFat, stepperSize); |
446 | } |
447 | #endif // GTK_CHECK_VERSION(3, 20, 0) |
448 | |
449 | #if GTK_CHECK_VERSION(3, 20, 0) |
450 | bool ScrollbarThemeGtk::paint(Scrollbar& scrollbar, GraphicsContext& graphicsContext, const IntRect& damageRect) |
451 | { |
452 | if (graphicsContext.paintingDisabled()) |
453 | return false; |
454 | |
455 | if (!scrollbar.enabled()) |
456 | return true; |
457 | |
458 | double opacity = scrollbar.hoveredPart() == NoPart ? scrollbar.opacity() : 1; |
459 | if (!opacity) |
460 | return true; |
461 | |
462 | IntRect rect = scrollbar.frameRect(); |
463 | if (!rect.intersects(damageRect)) |
464 | return true; |
465 | |
466 | auto scrollbarState = scrollbarPartStateFlags(scrollbar, AllParts, true); |
467 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(widgetTypeForScrollbar(scrollbar, scrollbarState))); |
468 | auto& scrollbarGadget = scrollbarWidget.scrollbar(); |
469 | scrollbarGadget.setState(scrollbarState); |
470 | if (m_usesOverlayScrollbars) |
471 | opacity *= scrollbarGadget.opacity(); |
472 | if (!opacity) |
473 | return true; |
474 | |
475 | auto& trough = scrollbarWidget.trough(); |
476 | trough.setState(scrollbarPartStateFlags(scrollbar, BackTrackPart)); |
477 | |
478 | auto* backwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Backward); |
479 | if (backwardStepper) |
480 | backwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonStartPart)); |
481 | auto* secondaryForwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryForward); |
482 | if (secondaryForwardStepper) |
483 | secondaryForwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonStartPart)); |
484 | auto* secondaryBackwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::SecondaryBackward); |
485 | if (secondaryBackwardStepper) |
486 | secondaryBackwardStepper->setState(scrollbarPartStateFlags(scrollbar, BackButtonEndPart)); |
487 | auto* forwardStepper = scrollbarWidget.stepper(RenderThemeScrollbarGadget::Steppers::Forward); |
488 | if (forwardStepper) |
489 | forwardStepper->setState(scrollbarPartStateFlags(scrollbar, ForwardButtonEndPart)); |
490 | |
491 | IntSize preferredSize = scrollbarWidget.contents().preferredSize(); |
492 | int thumbSize = thumbLength(scrollbar); |
493 | if (thumbSize) { |
494 | scrollbarWidget.slider().setState(scrollbarPartStateFlags(scrollbar, ThumbPart)); |
495 | preferredSize = preferredSize.expandedTo(scrollbarWidget.slider().preferredSize()); |
496 | } |
497 | preferredSize += scrollbarGadget.preferredSize() - scrollbarGadget.minimumSize(); |
498 | |
499 | FloatRect contentsRect(rect); |
500 | // When using overlay scrollbars we always claim the size of the scrollbar when hovered, so when |
501 | // drawing the indicator we need to adjust the rectangle to its actual size in indicator mode. |
502 | if (scrollbar.orientation() == VerticalScrollbar) { |
503 | if (rect.width() != preferredSize.width()) { |
504 | if (!scrollbar.scrollableArea().shouldPlaceBlockDirectionScrollbarOnLeft()) |
505 | contentsRect.move(std::abs(rect.width() - preferredSize.width()), 0); |
506 | contentsRect.setWidth(preferredSize.width()); |
507 | } |
508 | } else { |
509 | if (rect.height() != preferredSize.height()) { |
510 | contentsRect.move(0, std::abs(rect.height() - preferredSize.height())); |
511 | contentsRect.setHeight(preferredSize.height()); |
512 | } |
513 | } |
514 | |
515 | if (opacity != 1) { |
516 | graphicsContext.save(); |
517 | graphicsContext.clip(damageRect); |
518 | graphicsContext.beginTransparencyLayer(opacity); |
519 | } |
520 | |
521 | scrollbarGadget.render(graphicsContext.platformContext()->cr(), contentsRect, &contentsRect); |
522 | scrollbarWidget.contents().render(graphicsContext.platformContext()->cr(), contentsRect, &contentsRect); |
523 | |
524 | if (backwardStepper) { |
525 | FloatRect buttonRect = contentsRect; |
526 | if (scrollbar.orientation() == VerticalScrollbar) |
527 | buttonRect.setHeight(backwardStepper->preferredSize().height()); |
528 | else |
529 | buttonRect.setWidth(backwardStepper->preferredSize().width()); |
530 | static_cast<RenderThemeScrollbarGadget&>(scrollbarGadget).renderStepper(graphicsContext.platformContext()->cr(), buttonRect, backwardStepper, |
531 | scrollbar.orientation() == VerticalScrollbar ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL, RenderThemeScrollbarGadget::Steppers::Backward); |
532 | if (scrollbar.orientation() == VerticalScrollbar) { |
533 | contentsRect.move(0, buttonRect.height()); |
534 | contentsRect.contract(0, buttonRect.height()); |
535 | } else { |
536 | contentsRect.move(buttonRect.width(), 0); |
537 | contentsRect.contract(buttonRect.width(), 0); |
538 | } |
539 | } |
540 | if (secondaryForwardStepper) { |
541 | FloatRect buttonRect = contentsRect; |
542 | if (scrollbar.orientation() == VerticalScrollbar) |
543 | buttonRect.setHeight(secondaryForwardStepper->preferredSize().height()); |
544 | else |
545 | buttonRect.setWidth(secondaryForwardStepper->preferredSize().width()); |
546 | static_cast<RenderThemeScrollbarGadget&>(scrollbarGadget).renderStepper(graphicsContext.platformContext()->cr(), buttonRect, secondaryForwardStepper, |
547 | scrollbar.orientation() == VerticalScrollbar ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL, RenderThemeScrollbarGadget::Steppers::SecondaryForward); |
548 | if (scrollbar.orientation() == VerticalScrollbar) { |
549 | contentsRect.move(0, buttonRect.height()); |
550 | contentsRect.contract(0, buttonRect.height()); |
551 | } else { |
552 | contentsRect.move(buttonRect.width(), 0); |
553 | contentsRect.contract(buttonRect.width(), 0); |
554 | } |
555 | } |
556 | if (secondaryBackwardStepper) { |
557 | FloatRect buttonRect = contentsRect; |
558 | if (scrollbar.orientation() == VerticalScrollbar) { |
559 | buttonRect.setHeight(secondaryBackwardStepper->preferredSize().height()); |
560 | buttonRect.move(0, contentsRect.height() - buttonRect.height()); |
561 | } else { |
562 | buttonRect.setWidth(secondaryBackwardStepper->preferredSize().width()); |
563 | buttonRect.move(contentsRect.width() - buttonRect.width(), 0); |
564 | } |
565 | static_cast<RenderThemeScrollbarGadget&>(scrollbarGadget).renderStepper(graphicsContext.platformContext()->cr(), buttonRect, secondaryBackwardStepper, |
566 | scrollbar.orientation() == VerticalScrollbar ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL, RenderThemeScrollbarGadget::Steppers::SecondaryBackward); |
567 | if (scrollbar.orientation() == VerticalScrollbar) |
568 | contentsRect.contract(0, buttonRect.height()); |
569 | else |
570 | contentsRect.contract(buttonRect.width(), 0); |
571 | } |
572 | if (forwardStepper) { |
573 | FloatRect buttonRect = contentsRect; |
574 | if (scrollbar.orientation() == VerticalScrollbar) { |
575 | buttonRect.setHeight(forwardStepper->preferredSize().height()); |
576 | buttonRect.move(0, contentsRect.height() - buttonRect.height()); |
577 | } else { |
578 | buttonRect.setWidth(forwardStepper->preferredSize().width()); |
579 | buttonRect.move(contentsRect.width() - buttonRect.width(), 0); |
580 | } |
581 | static_cast<RenderThemeScrollbarGadget&>(scrollbarGadget).renderStepper(graphicsContext.platformContext()->cr(), buttonRect, forwardStepper, |
582 | scrollbar.orientation() == VerticalScrollbar ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL, RenderThemeScrollbarGadget::Steppers::Forward); |
583 | if (scrollbar.orientation() == VerticalScrollbar) |
584 | contentsRect.contract(0, buttonRect.height()); |
585 | else |
586 | contentsRect.contract(buttonRect.width(), 0); |
587 | } |
588 | |
589 | trough.render(graphicsContext.platformContext()->cr(), contentsRect, &contentsRect); |
590 | |
591 | if (thumbSize) { |
592 | if (scrollbar.orientation() == VerticalScrollbar) { |
593 | contentsRect.move(0, thumbPosition(scrollbar)); |
594 | contentsRect.setWidth(scrollbarWidget.slider().preferredSize().width()); |
595 | contentsRect.setHeight(thumbSize); |
596 | } else { |
597 | contentsRect.move(thumbPosition(scrollbar), 0); |
598 | contentsRect.setWidth(thumbSize); |
599 | contentsRect.setHeight(scrollbarWidget.slider().preferredSize().height()); |
600 | } |
601 | if (contentsRect.intersects(damageRect)) |
602 | scrollbarWidget.slider().render(graphicsContext.platformContext()->cr(), contentsRect); |
603 | } |
604 | |
605 | if (opacity != 1) { |
606 | graphicsContext.endTransparencyLayer(); |
607 | graphicsContext.restore(); |
608 | } |
609 | |
610 | return true; |
611 | } |
612 | #else |
613 | static void paintStepper(GtkStyleContext* parentContext, GraphicsContext& context, Scrollbar& scrollbar, const IntRect& rect, ScrollbarPart part) |
614 | { |
615 | ScrollbarOrientation orientation = scrollbar.orientation(); |
616 | GRefPtr<GtkStyleContext> styleContext = createChildStyleContext(parentContext, "button" ); |
617 | |
618 | unsigned flags = 0; |
619 | if ((BackButtonStartPart == part && scrollbar.currentPos()) |
620 | || (BackButtonEndPart == part && scrollbar.currentPos()) |
621 | || (ForwardButtonEndPart == part && scrollbar.currentPos() != scrollbar.maximum()) |
622 | || (ForwardButtonStartPart == part && scrollbar.currentPos() != scrollbar.maximum())) { |
623 | if (part == scrollbar.pressedPart()) |
624 | flags |= GTK_STATE_FLAG_ACTIVE; |
625 | if (part == scrollbar.hoveredPart()) |
626 | flags |= GTK_STATE_FLAG_PRELIGHT; |
627 | } else |
628 | flags |= GTK_STATE_FLAG_INSENSITIVE; |
629 | gtk_style_context_set_state(styleContext.get(), static_cast<GtkStateFlags>(flags)); |
630 | |
631 | gtk_render_background(styleContext.get(), context.platformContext()->cr(), rect.x(), rect.y(), rect.width(), rect.height()); |
632 | gtk_render_frame(styleContext.get(), context.platformContext()->cr(), rect.x(), rect.y(), rect.width(), rect.height()); |
633 | |
634 | gfloat arrowScaling; |
635 | gtk_style_context_get_style(styleContext.get(), "arrow-scaling" , &arrowScaling, nullptr); |
636 | |
637 | double arrowSize = std::min(rect.width(), rect.height()) * arrowScaling; |
638 | FloatPoint arrowPoint(rect.x() + (rect.width() - arrowSize) / 2, rect.y() + (rect.height() - arrowSize) / 2); |
639 | |
640 | if (flags & GTK_STATE_FLAG_ACTIVE) { |
641 | gint arrowDisplacementX, arrowDisplacementY; |
642 | gtk_style_context_get_style(styleContext.get(), "arrow-displacement-x" , &arrowDisplacementX, "arrow-displacement-y" , &arrowDisplacementY, nullptr); |
643 | arrowPoint.move(arrowDisplacementX, arrowDisplacementY); |
644 | } |
645 | |
646 | gdouble angle; |
647 | if (orientation == VerticalScrollbar) |
648 | angle = (part == ForwardButtonEndPart || part == ForwardButtonStartPart) ? G_PI : 0; |
649 | else |
650 | angle = (part == ForwardButtonEndPart || part == ForwardButtonStartPart) ? G_PI / 2 : 3 * (G_PI / 2); |
651 | |
652 | gtk_render_arrow(styleContext.get(), context.platformContext()->cr(), angle, arrowPoint.x(), arrowPoint.y(), arrowSize); |
653 | } |
654 | |
655 | static void adjustRectAccordingToMargin(GtkStyleContext* context, IntRect& rect) |
656 | { |
657 | GtkBorder margin; |
658 | gtk_style_context_get_margin(context, gtk_style_context_get_state(context), &margin); |
659 | rect.move(margin.left, margin.top); |
660 | rect.contract(margin.left + margin.right, margin.top + margin.bottom); |
661 | } |
662 | |
663 | bool ScrollbarThemeGtk::paint(Scrollbar& scrollbar, GraphicsContext& graphicsContext, const IntRect& damageRect) |
664 | { |
665 | if (graphicsContext.paintingDisabled()) |
666 | return false; |
667 | |
668 | GRefPtr<GtkStyleContext> styleContext = createStyleContext(&scrollbar); |
669 | |
670 | // Create the ScrollbarControlPartMask based on the damageRect |
671 | ScrollbarControlPartMask scrollMask = NoPart; |
672 | |
673 | IntRect backButtonStartPaintRect; |
674 | IntRect backButtonEndPaintRect; |
675 | IntRect forwardButtonStartPaintRect; |
676 | IntRect forwardButtonEndPaintRect; |
677 | if (hasButtons(scrollbar)) { |
678 | backButtonStartPaintRect = backButtonRect(scrollbar, BackButtonStartPart, true); |
679 | if (damageRect.intersects(backButtonStartPaintRect)) |
680 | scrollMask |= BackButtonStartPart; |
681 | backButtonEndPaintRect = backButtonRect(scrollbar, BackButtonEndPart, true); |
682 | if (damageRect.intersects(backButtonEndPaintRect)) |
683 | scrollMask |= BackButtonEndPart; |
684 | forwardButtonStartPaintRect = forwardButtonRect(scrollbar, ForwardButtonStartPart, true); |
685 | if (damageRect.intersects(forwardButtonStartPaintRect)) |
686 | scrollMask |= ForwardButtonStartPart; |
687 | forwardButtonEndPaintRect = forwardButtonRect(scrollbar, ForwardButtonEndPart, true); |
688 | if (damageRect.intersects(forwardButtonEndPaintRect)) |
689 | scrollMask |= ForwardButtonEndPart; |
690 | } |
691 | |
692 | IntRect trackPaintRect = trackRect(scrollbar, true); |
693 | if (damageRect.intersects(trackPaintRect)) |
694 | scrollMask |= TrackBGPart; |
695 | |
696 | gboolean troughUnderSteppers; |
697 | gtk_style_context_get_style(styleContext.get(), "trough-under-steppers" , &troughUnderSteppers, nullptr); |
698 | if (troughUnderSteppers && (scrollMask & BackButtonStartPart |
699 | || scrollMask & BackButtonEndPart |
700 | || scrollMask & ForwardButtonStartPart |
701 | || scrollMask & ForwardButtonEndPart)) |
702 | scrollMask |= TrackBGPart; |
703 | |
704 | IntRect currentThumbRect; |
705 | if (hasThumb(scrollbar)) { |
706 | IntRect track = trackRect(scrollbar, false); |
707 | IntRect trackRect = constrainTrackRectToTrackPieces(scrollbar, track); |
708 | int thumbFat; |
709 | gtk_style_context_get_style(styleContext.get(), "slider-width" , &thumbFat, nullptr); |
710 | if (scrollbar.orientation() == HorizontalScrollbar) |
711 | currentThumbRect = IntRect(trackRect.x() + thumbPosition(scrollbar), trackRect.y() + (trackRect.height() - thumbFat) / 2, thumbLength(scrollbar), thumbFat); |
712 | else |
713 | currentThumbRect = IntRect(trackRect.x() + (trackRect.width() - thumbFat) / 2, trackRect.y() + thumbPosition(scrollbar), thumbFat, thumbLength(scrollbar)); |
714 | if (damageRect.intersects(currentThumbRect)) |
715 | scrollMask |= ThumbPart; |
716 | } |
717 | |
718 | if (scrollMask == NoPart) |
719 | return true; |
720 | |
721 | ScrollbarControlPartMask allButtons = BackButtonStartPart | BackButtonEndPart | ForwardButtonStartPart | ForwardButtonEndPart; |
722 | |
723 | // Paint the track background. If the trough-under-steppers property is true, this |
724 | // should be the full size of the scrollbar, but if is false, it should only be the |
725 | // track rect. |
726 | GRefPtr<GtkStyleContext> troughStyleContext = createChildStyleContext(styleContext.get(), "trough" ); |
727 | if (scrollMask & TrackBGPart || scrollMask & ThumbPart || scrollMask & allButtons) { |
728 | IntRect fullScrollbarRect = trackPaintRect; |
729 | if (troughUnderSteppers) |
730 | fullScrollbarRect = scrollbar.frameRect(); |
731 | |
732 | IntRect adjustedRect = fullScrollbarRect; |
733 | adjustRectAccordingToMargin(styleContext.get(), adjustedRect); |
734 | gtk_render_background(styleContext.get(), graphicsContext.platformContext()->cr(), adjustedRect.x(), adjustedRect.y(), adjustedRect.width(), adjustedRect.height()); |
735 | gtk_render_frame(styleContext.get(), graphicsContext.platformContext()->cr(), adjustedRect.x(), adjustedRect.y(), adjustedRect.width(), adjustedRect.height()); |
736 | |
737 | adjustedRect = fullScrollbarRect; |
738 | adjustRectAccordingToMargin(troughStyleContext.get(), adjustedRect); |
739 | gtk_render_background(troughStyleContext.get(), graphicsContext.platformContext()->cr(), adjustedRect.x(), adjustedRect.y(), adjustedRect.width(), adjustedRect.height()); |
740 | gtk_render_frame(troughStyleContext.get(), graphicsContext.platformContext()->cr(), adjustedRect.x(), adjustedRect.y(), adjustedRect.width(), adjustedRect.height()); |
741 | } |
742 | |
743 | // Paint the back and forward buttons. |
744 | if (scrollMask & BackButtonStartPart) |
745 | paintStepper(styleContext.get(), graphicsContext, scrollbar, backButtonStartPaintRect, BackButtonStartPart); |
746 | if (scrollMask & BackButtonEndPart) |
747 | paintStepper(styleContext.get(), graphicsContext, scrollbar, backButtonEndPaintRect, BackButtonEndPart); |
748 | if (scrollMask & ForwardButtonStartPart) |
749 | paintStepper(styleContext.get(), graphicsContext, scrollbar, forwardButtonStartPaintRect, ForwardButtonStartPart); |
750 | if (scrollMask & ForwardButtonEndPart) |
751 | paintStepper(styleContext.get(), graphicsContext, scrollbar, forwardButtonEndPaintRect, ForwardButtonEndPart); |
752 | |
753 | // Paint the thumb. |
754 | if (scrollMask & ThumbPart) { |
755 | GRefPtr<GtkStyleContext> thumbStyleContext = createChildStyleContext(troughStyleContext.get(), "slider" ); |
756 | unsigned flags = 0; |
757 | if (scrollbar.pressedPart() == ThumbPart) |
758 | flags |= GTK_STATE_FLAG_ACTIVE; |
759 | if (scrollbar.hoveredPart() == ThumbPart) |
760 | flags |= GTK_STATE_FLAG_PRELIGHT; |
761 | gtk_style_context_set_state(thumbStyleContext.get(), static_cast<GtkStateFlags>(flags)); |
762 | |
763 | IntRect thumbRect(currentThumbRect); |
764 | adjustRectAccordingToMargin(thumbStyleContext.get(), thumbRect); |
765 | gtk_render_slider(thumbStyleContext.get(), graphicsContext.platformContext()->cr(), thumbRect.x(), thumbRect.y(), thumbRect.width(), thumbRect.height(), |
766 | scrollbar.orientation() == VerticalScrollbar ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL); |
767 | } |
768 | |
769 | return true; |
770 | } |
771 | #endif // GTK_CHECK_VERSION(3, 20, 0) |
772 | |
773 | ScrollbarButtonPressAction ScrollbarThemeGtk::handleMousePressEvent(Scrollbar&, const PlatformMouseEvent& event, ScrollbarPart pressedPart) |
774 | { |
775 | gboolean warpSlider = FALSE; |
776 | switch (pressedPart) { |
777 | case BackTrackPart: |
778 | case ForwardTrackPart: |
779 | g_object_get(gtk_settings_get_default(), |
780 | "gtk-primary-button-warps-slider" , |
781 | &warpSlider, nullptr); |
782 | // The shift key or middle/right button reverses the sense. |
783 | if (event.shiftKey() || event.button() != LeftButton) |
784 | warpSlider = !warpSlider; |
785 | return warpSlider ? |
786 | ScrollbarButtonPressAction::CenterOnThumb: |
787 | ScrollbarButtonPressAction::Scroll; |
788 | case ThumbPart: |
789 | if (event.button() != RightButton) |
790 | return ScrollbarButtonPressAction::StartDrag; |
791 | break; |
792 | case BackButtonStartPart: |
793 | case ForwardButtonStartPart: |
794 | case BackButtonEndPart: |
795 | case ForwardButtonEndPart: |
796 | return ScrollbarButtonPressAction::Scroll; |
797 | default: |
798 | break; |
799 | } |
800 | |
801 | return ScrollbarButtonPressAction::None; |
802 | } |
803 | |
804 | #if GTK_CHECK_VERSION(3, 20, 0) |
805 | int ScrollbarThemeGtk::scrollbarThickness(ScrollbarControlSize, ScrollbarExpansionState) |
806 | { |
807 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(RenderThemeWidget::Type::VerticalScrollbarRight)); |
808 | scrollbarWidget.scrollbar().setState(GTK_STATE_FLAG_PRELIGHT); |
809 | IntSize contentsPreferredSize = scrollbarWidget.contents().preferredSize(); |
810 | contentsPreferredSize = contentsPreferredSize.expandedTo(scrollbarWidget.slider().preferredSize()); |
811 | IntSize preferredSize = contentsPreferredSize + scrollbarWidget.scrollbar().preferredSize() - scrollbarWidget.scrollbar().minimumSize(); |
812 | return preferredSize.width(); |
813 | } |
814 | #else |
815 | int ScrollbarThemeGtk::scrollbarThickness(ScrollbarControlSize, ScrollbarExpansionState) |
816 | { |
817 | int thumbFat, troughBorderWidth; |
818 | gtk_style_context_get_style(createStyleContext().get(), "slider-width" , &thumbFat, "trough-border" , &troughBorderWidth, nullptr); |
819 | return thumbFat + 2 * troughBorderWidth; |
820 | } |
821 | #endif // GTK_CHECK_VERSION(3, 20, 0) |
822 | |
823 | #if GTK_CHECK_VERSION(3, 20, 0) |
824 | int ScrollbarThemeGtk::minimumThumbLength(Scrollbar& scrollbar) |
825 | { |
826 | auto& scrollbarWidget = static_cast<RenderThemeScrollbar&>(RenderThemeWidget::getOrCreate(RenderThemeWidget::Type::VerticalScrollbarRight)); |
827 | scrollbarWidget.scrollbar().setState(GTK_STATE_FLAG_PRELIGHT); |
828 | IntSize minSize = scrollbarWidget.slider().minimumSize(); |
829 | return scrollbar.orientation() == VerticalScrollbar ? minSize.height() : minSize.width(); |
830 | } |
831 | #else |
832 | int ScrollbarThemeGtk::minimumThumbLength(Scrollbar& scrollbar) |
833 | { |
834 | int minThumbLength = 0; |
835 | gtk_style_context_get_style(createStyleContext(&scrollbar).get(), "min-slider-length" , &minThumbLength, nullptr); |
836 | return minThumbLength; |
837 | } |
838 | #endif |
839 | |
840 | #else // GTK_API_VERSION_2 |
841 | bool ScrollbarThemeGtk::hasThumb(Scrollbar&) |
842 | { |
843 | return false; |
844 | } |
845 | |
846 | IntRect ScrollbarThemeGtk::backButtonRect(Scrollbar&, ScrollbarPart, bool) |
847 | { |
848 | return IntRect(); |
849 | } |
850 | |
851 | IntRect ScrollbarThemeGtk::forwardButtonRect(Scrollbar&, ScrollbarPart, bool) |
852 | { |
853 | return IntRect(); |
854 | } |
855 | |
856 | IntRect ScrollbarThemeGtk::trackRect(Scrollbar&, bool) |
857 | { |
858 | return IntRect(); |
859 | } |
860 | |
861 | bool ScrollbarThemeGtk::hasButtons(Scrollbar&) |
862 | { |
863 | return false; |
864 | } |
865 | #endif // GTK_API_VERSION_2 |
866 | |
867 | } |
868 | |