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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 "chrome/browser/ui/panels/stacked_panel_drag_handler.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "chrome/browser/ui/panels/panel.h" | |
| 9 #include "chrome/browser/ui/panels/panel_collection.h" | |
| 10 #include "chrome/browser/ui/panels/stacked_panel_collection.h" | |
| 11 #include "ui/gfx/geometry/point.h" | |
| 12 #include "ui/gfx/geometry/rect.h" | |
| 13 | |
| 14 // static | |
| 15 void StackedPanelDragHandler::HandleDrag(Panel* panel, | |
| 16 const gfx::Point& target_position, | |
| 17 bool in_orginal_collection) { | |
| 18 DCHECK_EQ(PanelCollection::STACKED, panel->collection()->type()); | |
| 19 | |
| 20 StackedPanelCollection* stack = panel->stack(); | |
| 21 DCHECK(stack); | |
| 22 | |
| 23 // If the panel is in its original stack, only top panel is allowed to drag. | |
| 24 if (in_orginal_collection && panel != stack->top_panel()) | |
| 25 return; | |
| 26 | |
| 27 // Find out if all panels in the stack are being dragged. | |
| 28 bool all_panels_under_drag = true; | |
| 29 for (StackedPanelCollection::Panels::const_iterator iter = | |
| 30 stack->panels().begin(); | |
| 31 iter != stack->panels().end(); ++iter) { | |
| 32 if (!(*iter)->in_preview_mode()) { | |
| 33 all_panels_under_drag = false; | |
| 34 break; | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 gfx::Vector2d delta_origin = target_position - panel->GetBounds().origin(); | |
| 39 | |
| 40 // If not all panels in the stack are being dragged, it means that these | |
| 41 // panels being dragged have just been added to this stack. Dragging these | |
| 42 // panels should only cause the horizontal movement due to that y position | |
| 43 // of these panels have already aligned. | |
| 44 if (!all_panels_under_drag) | |
| 45 delta_origin.set_y(0); | |
| 46 | |
| 47 stack->MoveAllDraggingPanelsInstantly(delta_origin); | |
| 48 } | |
| 49 | |
| 50 // static | |
| 51 void StackedPanelDragHandler::FinalizeDrag(Panel* panel) { | |
| 52 DCHECK_EQ(PanelCollection::STACKED, panel->collection()->type()); | |
| 53 | |
| 54 StackedPanelCollection* stack = panel->stack(); | |
| 55 DCHECK(stack); | |
| 56 | |
| 57 // It is only needed when dragging a panel/stack to stack to the top of | |
| 58 // another panel/stack. | |
| 59 if (stack->top_panel() != panel) | |
| 60 return; | |
| 61 | |
| 62 // Find the first non-dragging panel that is used to align all dragging panels | |
| 63 // above it to have the same x position. This is because all dragging panels | |
| 64 // are only aligned vertically when the stacking occurs. | |
| 65 Panel* first_non_dragging_panel = NULL; | |
| 66 for (StackedPanelCollection::Panels::const_iterator iter = | |
| 67 stack->panels().begin(); | |
| 68 iter != stack->panels().end(); ++iter) { | |
| 69 Panel* panel = *iter; | |
| 70 if (!panel->in_preview_mode()) { | |
| 71 first_non_dragging_panel = panel; | |
| 72 break; | |
| 73 } | |
| 74 } | |
| 75 if (!first_non_dragging_panel) | |
| 76 return; | |
| 77 | |
| 78 gfx::Vector2d delta_origin( | |
| 79 first_non_dragging_panel->GetBounds().x() - panel->GetBounds().x(), | |
| 80 0); | |
| 81 stack->MoveAllDraggingPanelsInstantly(delta_origin); | |
| 82 } | |
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Chromium Code Reviews
Issue 2263863002:
Remove implementation of Panels on OSes other than ChromeOS. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master