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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ash/wm/window_resizer.h" | 5 #include "ash/wm/window_resizer.h" |
6 | 6 |
7 #include "ash/screen_ash.h" | 7 #include "ash/screen_ash.h" |
8 #include "ash/shell.h" | 8 #include "ash/shell.h" |
9 #include "ash/wm/property_util.h" | 9 #include "ash/wm/property_util.h" |
10 #include "ash/wm/window_util.h" | 10 #include "ash/wm/window_util.h" |
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107 window_component(HTNOWHERE), | 107 window_component(HTNOWHERE), |
108 bounds_change(0), | 108 bounds_change(0), |
109 position_change_direction(0), | 109 position_change_direction(0), |
110 size_change_direction(0), | 110 size_change_direction(0), |
111 is_resizable(false) { | 111 is_resizable(false) { |
112 } | 112 } |
113 | 113 |
114 WindowResizer::Details::Details(aura::Window* window, | 114 WindowResizer::Details::Details(aura::Window* window, |
115 const gfx::Point& location, | 115 const gfx::Point& location, |
116 int window_component) | 116 int window_component) |
117 : window(window), | 117 : window(window), |
118 initial_bounds_in_parent(window->bounds()), | 118 initial_bounds(window->bounds()), |
119 restore_bounds(gfx::Rect()), | 119 restore_bounds(gfx::Rect()), |
120 initial_location_in_parent(location), | 120 initial_location_in_parent(location), |
121 initial_opacity(window->layer()->opacity()), | 121 initial_opacity(window->layer()->opacity()), |
122 window_component(window_component), | 122 window_component(window_component), |
123 bounds_change(GetBoundsChangeForWindowComponent(window_component)), | 123 bounds_change(GetBoundsChangeForWindowComponent(window_component)), |
124 position_change_direction( | 124 position_change_direction( |
125 GetPositionChangeDirectionForWindowComponent(window_component)), | 125 GetPositionChangeDirectionForWindowComponent(window_component)), |
126 size_change_direction( | 126 size_change_direction( |
127 GetSizeChangeDirectionForWindowComponent(window_component)), | 127 GetSizeChangeDirectionForWindowComponent(window_component)), |
128 is_resizable(bounds_change != kBoundsChangeDirection_None) { | 128 is_resizable(bounds_change != kBoundsChangeDirection_None) { |
129 if (wm::IsWindowNormal(window) && | 129 if (wm::IsWindowNormal(window) && |
130 GetRestoreBoundsInScreen(window) && | 130 GetRestoreBoundsInScreen(window) && |
131 window_component == HTCAPTION) | 131 window_component == HTCAPTION) |
132 restore_bounds = *GetRestoreBoundsInScreen(window); | 132 restore_bounds = *GetRestoreBoundsInScreen(window); |
133 } | 133 } |
134 | 134 |
135 WindowResizer::Details::~Details() { | 135 WindowResizer::Details::~Details() { |
136 } | 136 } |
137 | 137 |
138 WindowResizer::WindowResizer() { | 138 WindowResizer::WindowResizer() { |
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166 break; | 166 break; |
167 } | 167 } |
168 return bounds_change; | 168 return bounds_change; |
169 } | 169 } |
170 | 170 |
171 // static | 171 // static |
172 gfx::Rect WindowResizer::CalculateBoundsForDrag( | 172 gfx::Rect WindowResizer::CalculateBoundsForDrag( |
173 const Details& details, | 173 const Details& details, |
174 const gfx::Point& passed_location) { | 174 const gfx::Point& passed_location) { |
175 if (!details.is_resizable) | 175 if (!details.is_resizable) |
176 return details.initial_bounds_in_parent; | 176 return details.initial_bounds; |
177 | 177 |
178 gfx::Point location = passed_location; | 178 gfx::Point location = passed_location; |
179 gfx::Rect work_area = | 179 gfx::Rect work_area = |
180 ScreenAsh::GetDisplayWorkAreaBoundsInParent(details.window); | 180 ScreenAsh::GetDisplayWorkAreaBoundsInParent(details.window); |
181 | 181 |
182 int delta_x = location.x() - details.initial_location_in_parent.x(); | 182 int delta_x = location.x() - details.initial_location_in_parent.x(); |
183 int delta_y = location.y() - details.initial_location_in_parent.y(); | 183 int delta_y = location.y() - details.initial_location_in_parent.y(); |
184 | 184 |
185 // The minimize size constraint may limit how much we change the window | 185 // The minimize size constraint may limit how much we change the window |
186 // position. For example, dragging the left edge to the right should stop | 186 // position. For example, dragging the left edge to the right should stop |
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230 } | 230 } |
231 } | 231 } |
232 | 232 |
233 if (details.bounds_change & kBoundsChange_Repositions) { | 233 if (details.bounds_change & kBoundsChange_Repositions) { |
234 // When we might want to reposition a window which is also restored to its | 234 // When we might want to reposition a window which is also restored to its |
235 // previous size, to keep the cursor within the dragged window. | 235 // previous size, to keep the cursor within the dragged window. |
236 if (!details.restore_bounds.IsEmpty()) { | 236 if (!details.restore_bounds.IsEmpty()) { |
237 // However - it is not desirable to change the origin if the window would | 237 // However - it is not desirable to change the origin if the window would |
238 // be still hit by the cursor. | 238 // be still hit by the cursor. |
239 if (details.initial_location_in_parent.x() > | 239 if (details.initial_location_in_parent.x() > |
240 details.initial_bounds_in_parent.x() + details.restore_bounds.width()) | 240 details.initial_bounds.x() + details.restore_bounds.width()) |
241 new_bounds.set_x(location.x() - details.restore_bounds.width() / 2); | 241 new_bounds.set_x(location.x() - details.restore_bounds.width() / 2); |
242 } | 242 } |
243 | 243 |
244 // Make sure that |new_bounds| doesn't leave any of the displays. Note that | 244 // Make sure that |new_bounds| doesn't leave any of the displays. Note that |
245 // the |work_area| above isn't good for this check since it is the work area | 245 // the |work_area| above isn't good for this check since it is the work area |
246 // for the current display but the window can move to a different one. | 246 // for the current display but the window can move to a different one. |
247 aura::Window* parent = details.window->parent(); | 247 aura::Window* parent = details.window->parent(); |
248 gfx::Rect new_bounds_in_screen = | 248 gfx::Rect new_bounds_in_screen = |
249 ScreenAsh::ConvertRectToScreen(parent, new_bounds); | 249 ScreenAsh::ConvertRectToScreen(parent, new_bounds); |
250 const gfx::Display& display = | 250 const gfx::Display& display = |
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270 return window_component == HTBOTTOMLEFT || | 270 return window_component == HTBOTTOMLEFT || |
271 window_component == HTBOTTOM || | 271 window_component == HTBOTTOM || |
272 window_component == HTBOTTOMRIGHT || | 272 window_component == HTBOTTOMRIGHT || |
273 window_component == HTGROWBOX; | 273 window_component == HTGROWBOX; |
274 } | 274 } |
275 | 275 |
276 // static | 276 // static |
277 gfx::Point WindowResizer::GetOriginForDrag(const Details& details, | 277 gfx::Point WindowResizer::GetOriginForDrag(const Details& details, |
278 int delta_x, | 278 int delta_x, |
279 int delta_y) { | 279 int delta_y) { |
280 gfx::Point origin = details.initial_bounds_in_parent.origin(); | 280 gfx::Point origin = details.initial_bounds.origin(); |
281 if (details.bounds_change & kBoundsChange_Repositions) { | 281 if (details.bounds_change & kBoundsChange_Repositions) { |
282 int pos_change_direction = | 282 int pos_change_direction = |
283 GetPositionChangeDirectionForWindowComponent(details.window_component); | 283 GetPositionChangeDirectionForWindowComponent(details.window_component); |
284 if (pos_change_direction & kBoundsChangeDirection_Horizontal) | 284 if (pos_change_direction & kBoundsChangeDirection_Horizontal) |
285 origin.Offset(delta_x, 0); | 285 origin.Offset(delta_x, 0); |
286 if (pos_change_direction & kBoundsChangeDirection_Vertical) | 286 if (pos_change_direction & kBoundsChangeDirection_Vertical) |
287 origin.Offset(0, delta_y); | 287 origin.Offset(0, delta_y); |
288 } | 288 } |
289 return origin; | 289 return origin; |
290 } | 290 } |
291 | 291 |
292 // static | 292 // static |
293 gfx::Size WindowResizer::GetSizeForDrag(const Details& details, | 293 gfx::Size WindowResizer::GetSizeForDrag(const Details& details, |
294 int* delta_x, | 294 int* delta_x, |
295 int* delta_y) { | 295 int* delta_y) { |
296 gfx::Size size = details.initial_bounds_in_parent.size(); | 296 gfx::Size size = details.initial_bounds.size(); |
297 if (details.bounds_change & kBoundsChange_Resizes) { | 297 if (details.bounds_change & kBoundsChange_Resizes) { |
298 gfx::Size min_size = details.window->delegate()->GetMinimumSize(); | 298 gfx::Size min_size = details.window->delegate()->GetMinimumSize(); |
299 size.SetSize(GetWidthForDrag(details, min_size.width(), delta_x), | 299 size.SetSize(GetWidthForDrag(details, min_size.width(), delta_x), |
300 GetHeightForDrag(details, min_size.height(), delta_y)); | 300 GetHeightForDrag(details, min_size.height(), delta_y)); |
301 } else if (!details.restore_bounds.IsEmpty()) { | 301 } else if (!details.restore_bounds.IsEmpty()) { |
302 size = details.restore_bounds.size(); | 302 size = details.restore_bounds.size(); |
303 } | 303 } |
304 return size; | 304 return size; |
305 } | 305 } |
306 | 306 |
307 // static | 307 // static |
308 int WindowResizer::GetWidthForDrag(const Details& details, | 308 int WindowResizer::GetWidthForDrag(const Details& details, |
309 int min_width, | 309 int min_width, |
310 int* delta_x) { | 310 int* delta_x) { |
311 int width = details.initial_bounds_in_parent.width(); | 311 int width = details.initial_bounds.width(); |
312 if (details.size_change_direction & kBoundsChangeDirection_Horizontal) { | 312 if (details.size_change_direction & kBoundsChangeDirection_Horizontal) { |
313 // Along the right edge, positive delta_x increases the window size. | 313 // Along the right edge, positive delta_x increases the window size. |
314 int x_multiplier = IsRightEdge(details.window_component) ? 1 : -1; | 314 int x_multiplier = IsRightEdge(details.window_component) ? 1 : -1; |
315 width += x_multiplier * (*delta_x); | 315 width += x_multiplier * (*delta_x); |
316 | 316 |
317 // Ensure we don't shrink past the minimum width and clamp delta_x | 317 // Ensure we don't shrink past the minimum width and clamp delta_x |
318 // for the window origin computation. | 318 // for the window origin computation. |
319 if (width < min_width) { | 319 if (width < min_width) { |
320 width = min_width; | 320 width = min_width; |
321 *delta_x = -x_multiplier * (details.initial_bounds_in_parent.width() - | 321 *delta_x = -x_multiplier * (details.initial_bounds.width() - min_width); |
322 min_width); | |
323 } | 322 } |
324 | 323 |
325 // And don't let the window go bigger than the display. | 324 // And don't let the window go bigger than the display. |
326 int max_width = Shell::GetScreen()->GetDisplayNearestWindow( | 325 int max_width = Shell::GetScreen()->GetDisplayNearestWindow( |
327 details.window).bounds().width(); | 326 details.window).bounds().width(); |
328 if (width > max_width) { | 327 if (width > max_width) { |
329 width = max_width; | 328 width = max_width; |
330 *delta_x = -x_multiplier * (details.initial_bounds_in_parent.width() - | 329 *delta_x = -x_multiplier * (details.initial_bounds.width() - max_width); |
331 max_width); | |
332 } | 330 } |
333 } | 331 } |
334 return width; | 332 return width; |
335 } | 333 } |
336 | 334 |
337 // static | 335 // static |
338 int WindowResizer::GetHeightForDrag(const Details& details, | 336 int WindowResizer::GetHeightForDrag(const Details& details, |
339 int min_height, | 337 int min_height, |
340 int* delta_y) { | 338 int* delta_y) { |
341 int height = details.initial_bounds_in_parent.height(); | 339 int height = details.initial_bounds.height(); |
342 if (details.size_change_direction & kBoundsChangeDirection_Vertical) { | 340 if (details.size_change_direction & kBoundsChangeDirection_Vertical) { |
343 // Along the bottom edge, positive delta_y increases the window size. | 341 // Along the bottom edge, positive delta_y increases the window size. |
344 int y_multiplier = IsBottomEdge(details.window_component) ? 1 : -1; | 342 int y_multiplier = IsBottomEdge(details.window_component) ? 1 : -1; |
345 height += y_multiplier * (*delta_y); | 343 height += y_multiplier * (*delta_y); |
346 | 344 |
347 // Ensure we don't shrink past the minimum height and clamp delta_y | 345 // Ensure we don't shrink past the minimum height and clamp delta_y |
348 // for the window origin computation. | 346 // for the window origin computation. |
349 if (height < min_height) { | 347 if (height < min_height) { |
350 height = min_height; | 348 height = min_height; |
351 *delta_y = -y_multiplier * (details.initial_bounds_in_parent.height() - | 349 *delta_y = -y_multiplier * (details.initial_bounds.height() - min_height); |
352 min_height); | |
353 } | 350 } |
354 | 351 |
355 // And don't let the window go bigger than the display. | 352 // And don't let the window go bigger than the display. |
356 int max_height = Shell::GetScreen()->GetDisplayNearestWindow( | 353 int max_height = Shell::GetScreen()->GetDisplayNearestWindow( |
357 details.window).bounds().height(); | 354 details.window).bounds().height(); |
358 if (height > max_height) { | 355 if (height > max_height) { |
359 height = max_height; | 356 height = max_height; |
360 *delta_y = -y_multiplier * (details.initial_bounds_in_parent.height() - | 357 *delta_y = -y_multiplier * (details.initial_bounds.height() - max_height); |
361 max_height); | |
362 } | 358 } |
363 } | 359 } |
364 return height; | 360 return height; |
365 } | 361 } |
366 | 362 |
367 } // namespace aura | 363 } // namespace aura |
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