[wxWidgets]_[初级]_[自定义按钮]
场景:
1.现在的软件上的按钮都不是标准的按钮了，因为基本上是贴图上去的，正常情况下一种图片，鼠标移上去之后按钮显示另一种效果，按下去之后又是另一种效果。
2.wx的做法其实和mfc的按钮原理是一样的，就是给按钮贴图和重绘背景。
以下是源文件.
dh_bitmap_button.h
/*
* File: dh_bitmap_button.h
* Author: Sai
*
* Created on 2009年12月29日, 下午4:08
*/
#ifndef _DH_BITMAP_BUTTON_H
#define _DH_BITMAP_BUTTON_H
#include "wx/wx.h"
enum DhBitmapButtonStatus
{
kDhBitmapButtonNormal,
kDhBitmapButtonEnter,
kDhBitmapButtonDown,
kDhBitmapButtonUp,
kDhBitmapButtonLeave,
kDhBitmapButtonDClick,
kDhBitmapButtonDisable
};
class DhBitmapButton : public wxControl
{
DECLARE_DYNAMIC_CLASS(DhBitmapButton)
DECLARE_EVENT_TABLE()
public:
DhBitmapButton();
virtual ~DhBitmapButton();
DhBitmapButton(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxBORDER_NONE,
const wxValidator& validator = wxDefaultValidator);
bool Create(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxSUNKEN_BORDER,
const wxValidator& validator = wxDefaultValidator);
wxSize DoGetBestSize() const;
void OnPaint(wxPaintEvent& event);
virtual void OnEnter(wxMouseEvent& event);
virtual void OnLeave(wxMouseEvent& event);
virtual void OnDown(wxMouseEvent& event);
virtual void OnDClick(wxMouseEvent& event);
virtual void OnUp(wxMouseEvent& event);
virtual bool Enable(bool enable = true);
virtual bool Disable();
/**
* 设置正常图片
*
* @param bitmap
*/
DhBitmapButton* set_normal_bitmap(wxBitmap* bitmap);
/**
* 1.设置按钮按下时的切换图片
*/
DhBitmapButton* set_down_bitmap(wxBitmap* bitmap);
/**
* 1.设置按钮按经过时的切换图片
*/
DhBitmapButton* set_enter_bitmap(wxBitmap* bitmap);
/**
* 1.设置Disable图片.
*
* @param bitmap
* @return this
*/
DhBitmapButton* set_disable_bitmap(wxBitmap* bitmap);
DhBitmapButton* set_background(const wxBitmap& bitmap);
bool SetBackgroundColour(const wxColour& colour);
protected:
void DrawExistBitmap(wxDC* dc,wxBitmap* image1,wxBitmap* exist_image);
private:
wxBitmap background_;
bool is_used_bg_;
wxBitmap* normal_bitmap_;
wxBitmap* down_bitmap_;
wxBitmap* enter_bitmap_;
wxBitmap* disable_bitmap_;
int button_status_;
wxString text_;
wxFont text_font_;
void DrawBackground(wxDC* dc);
};
#endif /* _DH_BITMAP_BUTTON_H */
dh_bitmap_button.cpp
/*
* File: DhBitmapButton.cpp
* Author: Sai
*
* Created on 2009年12月29日, 下午4:08
*/
#include "dh_bitmap_button.h"
BEGIN_EVENT_TABLE(DhBitmapButton, wxControl)
EVT_PAINT(DhBitmapButton::OnPaint)
EVT_ENTER_WINDOW(DhBitmapButton::OnEnter)
EVT_LEAVE_WINDOW(DhBitmapButton::OnLeave)
EVT_LEFT_DOWN(DhBitmapButton::OnDown)
EVT_LEFT_DCLICK(DhBitmapButton::OnDClick)
EVT_LEFT_UP(DhBitmapButton::OnUp)
END_EVENT_TABLE()
IMPLEMENT_DYNAMIC_CLASS(DhBitmapButton, wxControl)
DhBitmapButton::DhBitmapButton()
{
}
DhBitmapButton::DhBitmapButton(wxWindow* parent, wxWindowID id,
const wxPoint& pos,
const wxSize& size,
long style,
const wxValidator& validator)
: normal_bitmap_(NULL), down_bitmap_(NULL), enter_bitmap_(NULL)
{
Create(parent, id, pos, size, style, validator);
}
DhBitmapButton::~DhBitmapButton()
{
wxDELETE(normal_bitmap_);
wxDELETE(enter_bitmap_);
wxDELETE(down_bitmap_);
}
bool DhBitmapButton::Create(wxWindow* parent, wxWindowID id,
const wxPoint& pos,
const wxSize& size,
long style,
const wxValidator& validator)
{
normal_bitmap_ = NULL;
down_bitmap_ = NULL;
enter_bitmap_ = NULL;
disable_bitmap_ = NULL;
if (!wxControl::Create(parent, id, pos, size, style, validator))
{
return false;
}
SetBackgroundStyle(wxBG_STYLE_PAINT);
is_used_bg_ = false;
return true;
}
wxSize DhBitmapButton::DoGetBestSize() const
{
return GetSize();
}
void DhBitmapButton::DrawExistBitmap(wxDC* dc, wxBitmap* image1,
wxBitmap* exist_image)
{
if (image1)
{
dc->DrawBitmap(*image1, 0, 0, true);
} else
{
dc->DrawBitmap(*exist_image, 0, 0, true);
}
}
void DhBitmapButton::OnPaint(wxPaintEvent& event)
{
wxPaintDC dc(this);
DrawBackground(&dc);
//1.状态控制绘画,好处就是可以调用Refresh连背景一起刷新.
switch (button_status_)
{
case kDhBitmapButtonNormal:
dc.DrawBitmap(*normal_bitmap_, 0, 0, true);
break;
case kDhBitmapButtonEnter:
if (!enter_bitmap_)
{
int width = DoGetBestSize().GetWidth();
int height = DoGetBestSize().GetHeight();
wxClientDC dc(this);
dc.SetPen(*wxRED_PEN);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.DrawRectangle(0, 0, width, height);
break;
}
dc.DrawBitmap(*enter_bitmap_, 0, 0, true);
break;
case kDhBitmapButtonDown:
DrawExistBitmap(&dc,down_bitmap_,normal_bitmap_);
break;
case kDhBitmapButtonUp:
dc.DrawBitmap(*normal_bitmap_, 0, 0, true);
break;
case kDhBitmapButtonLeave:
dc.DrawBitmap(*normal_bitmap_, 0, 0, true);
break;
case kDhBitmapButtonDClick:
DrawExistBitmap(&dc,down_bitmap_,normal_bitmap_);
break;
case kDhBitmapButtonDisable:
DrawExistBitmap(&dc,disable_bitmap_,normal_bitmap_);
break;
default:
dc.DrawBitmap(*normal_bitmap_, 0, 0, true);
break;
}
}
void DhBitmapButton::DrawBackground(wxDC* dc)
{
if (is_used_bg_)
{
dc->DrawBitmap(background_, 0, 0, true);
} else
{
wxBrush brush(GetBackgroundColour());
wxPen pen(GetBackgroundColour());
dc->SetBrush(brush);
dc->SetPen(pen);
dc->DrawRectangle(0, 0, GetSize().x, GetSize().y);
}
}
void DhBitmapButton::OnEnter(wxMouseEvent& event)
{
button_status_ = kDhBitmapButtonEnter;
Refresh();
Update();
}
void DhBitmapButton::OnLeave(wxMouseEvent& event)
{
if (!IsEnabled())
{
return;
}
button_status_ = kDhBitmapButtonLeave;
Refresh();
Update();
}
void DhBitmapButton::OnDClick(wxMouseEvent& event)
{
button_status_ = kDhBitmapButtonDown;
Refresh(false);
Update();
}
void DhBitmapButton::OnDown(wxMouseEvent& event)
{
button_status_ = kDhBitmapButtonDown;
Refresh();
Update();
}
void DhBitmapButton::OnUp(wxMouseEvent& event)
{
if (kDhBitmapButtonDown != button_status_)
{
return;
}
button_status_ = kDhBitmapButtonUp;
Refresh();
Update();
wxCommandEvent myEvent(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
myEvent.SetEventObject(this);
GetEventHandler()->ProcessEvent(myEvent);
}
DhBitmapButton* DhBitmapButton::set_normal_bitmap(wxBitmap* bitmap)
{
normal_bitmap_ = bitmap;
return this;
}
DhBitmapButton* DhBitmapButton::set_down_bitmap(wxBitmap* bitmap)
{
down_bitmap_ = bitmap;
return this;
}
DhBitmapButton* DhBitmapButton::set_enter_bitmap(wxBitmap* bitmap)
{
enter_bitmap_ = bitmap;
return this;
}
bool DhBitmapButton::Enable(bool enable)
{
if (enable)
{
button_status_ = kDhBitmapButtonNormal;
} else
{
button_status_ = kDhBitmapButtonDisable;
}
Refresh(false);
Update();
return wxControl::Enable(enable);
}
bool DhBitmapButton::Disable()
{
return Enable(false);
}
DhBitmapButton* DhBitmapButton::set_disable_bitmap(wxBitmap* bitmap)
{
disable_bitmap_ = bitmap;
return this;
}
DhBitmapButton* DhBitmapButton::set_background(const wxBitmap& bitmap)
{
is_used_bg_ = true;
background_ = bitmap;
return this;
}
bool DhBitmapButton::SetBackgroundColour(const wxColour& colour)
{
is_used_bg_ = false;
return wxControl::SetBackgroundColour(colour);
}
调用方式和wxButton一样.
1.先注册事件映射宏.
EVT_BUTTON(Minimal_StartSimplePopup, MyFrame::OnStartSimplePopup)
2.调用代码.
wxBitmap* normal = new wxBitmap("./resources/start/start_normal.png",
wxBITMAP_TYPE_PNG);
wxBitmap* down = new wxBitmap("./resources/start/start_pressed.png",
wxBITMAP_TYPE_PNG);
wxBitmap* enter = new wxBitmap("./resources/start/start_current.png",
wxBITMAP_TYPE_PNG);
wxBitmap* disable = new wxBitmap("./resources/start/stop_normal.png",
wxBITMAP_TYPE_PNG);
wxBitmap bg = GetPositionBackgroundBitmap(0,0,normal->GetWidth(),normal->GetHeight());
start = new DhBitmapButton(page,Minimal_StartSimplePopup,wxPoint(0,0),
normal->GetSize());
start->set_normal_bitmap(normal)->set_down_bitmap(down)->set_enter_bitmap(enter);
start->set_disable_bitmap(disable);
start->set_background(bg);
wxBitmap MyFrame::GetPositionBackgroundBitmap(int x, int y,
int width,int height)
{
wxRect rect;
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
wxBitmap temp = this->bg.GetSubBitmap(rect);
return temp;
}
3.当然我觉得有更好的方式.
比如重载这个类.wxBitmapButton