diff options
Diffstat (limited to 'views/controls/scrollbar/base_scroll_bar_thumb.cc')
-rw-r--r-- | views/controls/scrollbar/base_scroll_bar_thumb.cc | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/views/controls/scrollbar/base_scroll_bar_thumb.cc b/views/controls/scrollbar/base_scroll_bar_thumb.cc deleted file mode 100644 index bbd42f9..0000000 --- a/views/controls/scrollbar/base_scroll_bar_thumb.cc +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright (c) 2011 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "views/controls/scrollbar/base_scroll_bar_thumb.h" - -#include "views/controls/scrollbar/base_scroll_bar.h" -#include "ui/gfx/canvas.h" -#include "ui/gfx/rect.h" - -namespace { -// The distance the mouse can be dragged outside the bounds of the thumb during -// dragging before the scrollbar will snap back to its regular position. -static const int kScrollThumbDragOutSnap = 100; -} - -namespace views { - -BaseScrollBarThumb::BaseScrollBarThumb(BaseScrollBar* scroll_bar) - : scroll_bar_(scroll_bar), - drag_start_position_(-1), - mouse_offset_(-1), - state_(CustomButton::BS_NORMAL) { -} - -BaseScrollBarThumb::~BaseScrollBarThumb() { -} - -void BaseScrollBarThumb::SetSize(int size) { - // Make sure the thumb is never sized smaller than its minimum possible - // display size. - gfx::Size prefsize = GetPreferredSize(); - size = std::max(size, scroll_bar_->IsHorizontal() ? prefsize.width() : - prefsize.height()); - gfx::Rect thumb_bounds = bounds(); - if (scroll_bar_->IsHorizontal()) { - thumb_bounds.set_width(size); - } else { - thumb_bounds.set_height(size); - } - SetBoundsRect(thumb_bounds); -} - -int BaseScrollBarThumb::GetSize() const { - if (scroll_bar_->IsHorizontal()) - return width(); - return height(); -} - -void BaseScrollBarThumb::SetPosition(int position) { - gfx::Rect thumb_bounds = bounds(); - gfx::Rect track_bounds = scroll_bar_->GetTrackBounds(); - if (scroll_bar_->IsHorizontal()) { - thumb_bounds.set_x(track_bounds.x() + position); - } else { - thumb_bounds.set_y(track_bounds.y() + position); - } - SetBoundsRect(thumb_bounds); -} - -int BaseScrollBarThumb::GetPosition() const { - gfx::Rect track_bounds = scroll_bar_->GetTrackBounds(); - if (scroll_bar_->IsHorizontal()) - return x() - track_bounds.x(); - return y() - track_bounds.y(); -} - -void BaseScrollBarThumb::OnMouseEntered(const MouseEvent& event) { - SetState(CustomButton::BS_HOT); -} - -void BaseScrollBarThumb::OnMouseExited(const MouseEvent& event) { - SetState(CustomButton::BS_NORMAL); -} - -bool BaseScrollBarThumb::OnMousePressed(const MouseEvent& event) { - mouse_offset_ = scroll_bar_->IsHorizontal() ? event.x() : event.y(); - drag_start_position_ = GetPosition(); - SetState(CustomButton::BS_PUSHED); - return true; -} - -bool BaseScrollBarThumb::OnMouseDragged(const MouseEvent& event) { - // If the user moves the mouse more than |kScrollThumbDragOutSnap| outside - // the bounds of the thumb, the scrollbar will snap the scroll back to the - // point it was at before the drag began. - if (scroll_bar_->IsHorizontal()) { - if ((event.y() < y() - kScrollThumbDragOutSnap) || - (event.y() > (y() + height() + kScrollThumbDragOutSnap))) { - scroll_bar_->ScrollToThumbPosition(drag_start_position_, false); - return true; - } - } else { - if ((event.x() < x() - kScrollThumbDragOutSnap) || - (event.x() > (x() + width() + kScrollThumbDragOutSnap))) { - scroll_bar_->ScrollToThumbPosition(drag_start_position_, false); - return true; - } - } - if (scroll_bar_->IsHorizontal()) { - int thumb_x = event.x() - mouse_offset_; - scroll_bar_->ScrollToThumbPosition(GetPosition() + thumb_x, false); - } else { - int thumb_y = event.y() - mouse_offset_; - scroll_bar_->ScrollToThumbPosition(GetPosition() + thumb_y, false); - } - return true; -} - -void BaseScrollBarThumb::OnMouseReleased(const MouseEvent& event) { - OnMouseCaptureLost(); -} - -void BaseScrollBarThumb::OnMouseCaptureLost() { - SetState(CustomButton::BS_HOT); -} - -CustomButton::ButtonState BaseScrollBarThumb::GetState() const { - return state_; -} - -void BaseScrollBarThumb::SetState(CustomButton::ButtonState state) { - state_ = state; - SchedulePaint(); -} - -} // namespace views |