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// Copyright (c) 2006-2008 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 VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
#define VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
#include "app/gfx/font.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColor.h"
#include "views/border.h"
#include "views/controls/button/custom_button.h"
namespace views {
////////////////////////////////////////////////////////////////////////////////
//
// TextButtonBorder
//
// A Border subclass that paints a TextButton's background layer -
// basically the button frame in the hot/pushed states.
//
////////////////////////////////////////////////////////////////////////////////
class TextButtonBorder : public Border {
public:
TextButtonBorder();
virtual ~TextButtonBorder();
// Render the background for the provided view
virtual void Paint(const View& view, gfx::Canvas* canvas) const;
// Returns the insets for the border.
virtual void GetInsets(gfx::Insets* insets) const;
private:
// Images
struct MBBImageSet {
SkBitmap* top_left;
SkBitmap* top;
SkBitmap* top_right;
SkBitmap* left;
SkBitmap* center;
SkBitmap* right;
SkBitmap* bottom_left;
SkBitmap* bottom;
SkBitmap* bottom_right;
};
MBBImageSet hot_set_;
MBBImageSet pushed_set_;
DISALLOW_COPY_AND_ASSIGN(TextButtonBorder);
};
////////////////////////////////////////////////////////////////////////////////
//
// TextButton
//
// A button which displays text and/or and icon that can be changed in
// response to actions. TextButton reserves space for the largest string
// passed to SetText. To reset the cached max size invoke ClearMaxTextSize.
//
////////////////////////////////////////////////////////////////////////////////
class TextButton : public CustomButton {
public:
TextButton(ButtonListener* listener, const std::wstring& text);
virtual ~TextButton();
// Call SetText once per string in your set of possible values at button
// creation time, so that it can contain the largest of them and avoid
// resizing the button when the text changes.
virtual void SetText(const std::wstring& text);
std::wstring text() const { return text_; }
enum TextAlignment {
ALIGN_LEFT,
ALIGN_CENTER,
ALIGN_RIGHT
};
void set_alignment(TextAlignment alignment) { alignment_ = alignment; }
// Sets the icon.
void SetIcon(const SkBitmap& icon);
SkBitmap icon() const { return icon_; }
// TextButton remembers the maximum display size of the text passed to
// SetText. This method resets the cached maximum display size to the
// current size.
void ClearMaxTextSize();
void set_max_width(int max_width) { max_width_ = max_width; }
void SetEnabledColor(SkColor color);
void SetDisabledColor(SkColor color);
void SetHighlightColor(SkColor color);
// Paint the button into the specified canvas. If |for_drag| is true, the
// function paints a drag image representation into the canvas.
virtual void Paint(gfx::Canvas* canvas, bool for_drag);
// Overridden from View:
virtual gfx::Size GetPreferredSize();
virtual gfx::Size GetMinimumSize();
virtual void SetEnabled(bool enabled);
// Text colors.
static const SkColor kEnabledColor;
static const SkColor kHighlightColor;
static const SkColor kDisabledColor;
protected:
virtual bool OnMousePressed(const MouseEvent& e);
virtual void Paint(gfx::Canvas* canvas);
// Called when enabled or disabled state changes, or the colors for those
// states change.
virtual void UpdateColor();
private:
// The text string that is displayed in the button.
std::wstring text_;
// The size of the text string.
gfx::Size text_size_;
// Track the size of the largest text string seen so far, so that
// changing text_ will not resize the button boundary.
gfx::Size max_text_size_;
// The alignment of the text string within the button.
TextAlignment alignment_;
// The font used to paint the text.
gfx::Font font_;
// Text color.
SkColor color_;
// State colors.
SkColor color_enabled_;
SkColor color_disabled_;
SkColor color_highlight_;
// An icon displayed with the text.
SkBitmap icon_;
// The width of the button will never be larger than this value. A value <= 0
// indicates the width is not constrained.
int max_width_;
DISALLOW_COPY_AND_ASSIGN(TextButton);
};
} // namespace views
#endif // VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
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