| // Copyright (c) 2012 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. |
| |
| #ifndef UI_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_ |
| #define UI_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_ |
| |
| #include "ui/gfx/font_list.h" |
| #include "ui/views/view.h" |
| #include "ui/views/views_export.h" |
| |
| namespace views { |
| |
| class TableView; |
| |
| // Views used to render the header for the table. |
| class VIEWS_EXPORT TableHeader : public views::View { |
| public: |
| // Amount the text is padded on the left/right side. |
| static const int kHorizontalPadding; |
| |
| // Amount of space reserved for the indicator and padding. |
| static const int kSortIndicatorWidth; |
| |
| explicit TableHeader(TableView* table); |
| virtual ~TableHeader(); |
| |
| const gfx::FontList& font_list() const { return font_list_; } |
| |
| // views::View overrides. |
| virtual void Layout() override; |
| virtual void OnPaint(gfx::Canvas* canvas) override; |
| virtual gfx::Size GetPreferredSize() const override; |
| virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) override; |
| virtual bool OnMousePressed(const ui::MouseEvent& event) override; |
| virtual bool OnMouseDragged(const ui::MouseEvent& event) override; |
| virtual void OnMouseReleased(const ui::MouseEvent& event) override; |
| virtual void OnMouseCaptureLost() override; |
| virtual void OnGestureEvent(ui::GestureEvent* event) override; |
| |
| private: |
| // Used to track the column being resized. |
| struct ColumnResizeDetails { |
| ColumnResizeDetails() : column_index(0), initial_x(0), initial_width(0) {} |
| |
| // Index into table_->visible_columns() that is being resized. |
| int column_index; |
| |
| // X-coordinate of the mouse at the time the resize started. |
| int initial_x; |
| |
| // Width of the column when the drag started. |
| int initial_width; |
| }; |
| |
| // If not already resizing and |event| is over a resizable column starts |
| // resizing. |
| bool StartResize(const ui::LocatedEvent& event); |
| |
| // Continues a resize operation. Does nothing if not in the process of |
| // resizing. |
| void ContinueResize(const ui::LocatedEvent& event); |
| |
| // Toggles the sort order of the column at the location in |event|. |
| void ToggleSortOrder(const ui::LocatedEvent& event); |
| |
| // Returns the column to resize given the specified x-coordinate, or -1 if |x| |
| // is not in the resize range of any columns. |
| int GetResizeColumn(int x) const; |
| |
| bool is_resizing() const { return resize_details_.get() != NULL; } |
| |
| const gfx::FontList font_list_; |
| |
| TableView* table_; |
| |
| // If non-null a resize is in progress. |
| scoped_ptr<ColumnResizeDetails> resize_details_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TableHeader); |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_ |