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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/resize_area.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "ui/accessibility/ax_view_state.h" | |
| 9 #include "ui/base/cursor/cursor.h" | |
| 10 #include "ui/views/controls/resize_area_delegate.h" | |
| 11 #include "ui/views/native_cursor.h" | |
| 12 | |
| 13 namespace views { | |
| 14 | |
| 15 const char ResizeArea::kViewClassName[] = "ResizeArea"; | |
| 16 | |
| 17 //////////////////////////////////////////////////////////////////////////////// | |
| 18 // ResizeArea | |
| 19 | |
| 20 ResizeArea::ResizeArea(ResizeAreaDelegate* delegate) | |
| 21 : delegate_(delegate), | |
| 22 initial_position_(0) { | |
| 23 } | |
| 24 | |
| 25 ResizeArea::~ResizeArea() { | |
| 26 } | |
| 27 | |
| 28 const char* ResizeArea::GetClassName() const { | |
| 29 return kViewClassName; | |
| 30 } | |
| 31 | |
| 32 gfx::NativeCursor ResizeArea::GetCursor(const ui::MouseEvent& event) { | |
| 33 return enabled() ? GetNativeEastWestResizeCursor() | |
| 34 : gfx::kNullCursor; | |
| 35 } | |
| 36 | |
| 37 bool ResizeArea::OnMousePressed(const ui::MouseEvent& event) { | |
| 38 if (!event.IsOnlyLeftMouseButton()) | |
| 39 return false; | |
| 40 | |
| 41 // The resize area obviously will move once you start dragging so we need to | |
| 42 // convert coordinates to screen coordinates so that we don't lose our | |
| 43 // bearings. | |
| 44 gfx::Point point(event.x(), 0); | |
| 45 View::ConvertPointToScreen(this, &point); | |
| 46 initial_position_ = point.x(); | |
| 47 | |
| 48 return true; | |
| 49 } | |
| 50 | |
| 51 bool ResizeArea::OnMouseDragged(const ui::MouseEvent& event) { | |
| 52 if (!event.IsLeftMouseButton()) | |
| 53 return false; | |
| 54 | |
| 55 ReportResizeAmount(event.x(), false); | |
| 56 return true; | |
| 57 } | |
| 58 | |
| 59 void ResizeArea::OnMouseReleased(const ui::MouseEvent& event) { | |
| 60 ReportResizeAmount(event.x(), true); | |
| 61 } | |
| 62 | |
| 63 void ResizeArea::OnMouseCaptureLost() { | |
| 64 ReportResizeAmount(initial_position_, true); | |
| 65 } | |
| 66 | |
| 67 void ResizeArea::GetAccessibleState(ui::AXViewState* state) { | |
| 68 state->role = ui::AX_ROLE_SPLITTER; | |
| 69 } | |
| 70 | |
| 71 void ResizeArea::ReportResizeAmount(int resize_amount, bool last_update) { | |
| 72 gfx::Point point(resize_amount, 0); | |
| 73 View::ConvertPointToScreen(this, &point); | |
| 74 resize_amount = point.x() - initial_position_; | |
| 75 delegate_->OnResize(base::i18n::IsRTL() ? -resize_amount : resize_amount, | |
| 76 last_update); | |
| 77 } | |
| 78 | |
| 79 } // namespace views | |
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