使用wxWidgets怎么实现图片和文件按钮
使用wxWidgets怎么实现图片和文件按钮？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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wxBitmapButtonEx.h
#ifndef _BITMAP_BUTTON_EX_H
#define _BITMAP_BUTTON_EX_H
#include "wx/wx.h"
enum eBitmapButtonStatus
{
BitmapButtonNormal,
BitmapButtonEnter,
BitmapButtonDown,
BitmapButtonUp,
BitmapButtonLeave,
BitmapButtonDClick,
BitmapButtonDisable
};
class wxBitmapButtonEx : public wxControl
{
DECLARE_DYNAMIC_CLASS(wxBitmapButtonEx)
DECLARE_EVENT_TABLE()
public:
wxBitmapButtonEx();
virtual ~wxBitmapButtonEx();
wxBitmapButtonEx(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
wxBitmapButtonEx* set_normal_bitmap(wxBitmap* bitmap);
//设置按钮按下时的切换图片
wxBitmapButtonEx* set_down_bitmap(wxBitmap* bitmap);
//设置按钮按经过时的切换图片
wxBitmapButtonEx* set_enter_bitmap(wxBitmap* bitmap);
//设置Disable图片.
wxBitmapButtonEx* set_disable_bitmap(wxBitmap* bitmap);
//设置背景图片
wxBitmapButtonEx* set_background(const wxBitmap& bitmap);
//设置背景颜色
bool set_background_colour(const wxColour& colour);
//设置按钮文字
void set_button_text(wxString str);
//设置文字字体
void set_text_font(wxFont font);
protected:
void DrawExistBitmap(wxDC* dc,wxBitmap* image1,wxBitmap* exist_image);
private:
wxBitmap background_bitmap;
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 /* _BITMAP_BUTTON_EX_H */wxBitmapButtonEx.cpp
#include "wxBitmapButtonEx.h" #includeBEGIN_EVENT_TABLE(wxBitmapButtonEx, wxControl) EVT_PAINT(wxBitmapButtonEx::OnPaint) EVT_ENTER_WINDOW(wxBitmapButtonEx::OnEnter) EVT_LEAVE_WINDOW(wxBitmapButtonEx::OnLeave) EVT_LEFT_DOWN(wxBitmapButtonEx::OnDown) EVT_LEFT_DCLICK(wxBitmapButtonEx::OnDClick) EVT_LEFT_UP(wxBitmapButtonEx::OnUp) END_EVENT_TABLE() IMPLEMENT_DYNAMIC_CLASS(wxBitmapButtonEx, wxControl) wxBitmapButtonEx::wxBitmapButtonEx() { } wxBitmapButtonEx::wxBitmapButtonEx(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); } wxBitmapButtonEx::~wxBitmapButtonEx() { wxDELETE(normal_bitmap); wxDELETE(enter_bitmap); wxDELETE(down_bitmap); } bool wxBitmapButtonEx::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; button_status = BitmapButtonNormal; if (!wxControl::Create(parent, id, pos, size, style, validator)) { return false; } SetBackgroundStyle(wxBG_STYLE_SYSTEM); is_used_bg = false; text_font.Create(12,wxSWISS,wxFONTSTYLE_NORMAL,wxNORMAL,false,_T("System"),wxFONTENCODING_DEFAULT); return true; } wxSize wxBitmapButtonEx::DoGetBestSize() const { return GetSize(); } void wxBitmapButtonEx::DrawExistBitmap(wxDC* dc, wxBitmap* image1, wxBitmap* exist_image) { int width = DoGetBestSize().GetWidth(); int height = DoGetBestSize().GetHeight(); //wxClientDC dc(this); dc->SetPen(*wxBLACK_PEN); wxColour clr(2,18,245); dc->SetTextForeground(*wxWHITE); //dc->SetBrush(*wxTRANSPARENT_BRUSH); //dc->SetBrush(*wxBLUE_BRUSH); //wxSystemSettings::GetColour(wxSYS_COLOUR_ACTIVECAPTION) wxBrush brush(clr);// dc->SetBrush(brush); dc->DrawRectangle(0, 0, width, height); /*wxRect rc = wxRect(0, 0, width, height); dc->DrawRoundedRectangle(rc,5);*/ int x = normal_bitmap->GetWidth(); int y = (height-normal_bitmap->GetHeight())/2.0; if (image1) { dc->DrawBitmap(*image1, width-x-5, y, true); //dc->DrawBitmap(*image1, 0, 0, true); } else { dc->DrawBitmap(*exist_image, width-x-5, y, true); //dc->DrawBitmap(*exist_image, 0, 0, true); } if (text.IsEmpty()) { return; } if (!text_font.IsNull()) { dc->SetFont(text_font); } int pointsize = text_font.GetPointSize(); //dc.SetLayoutDirection(wxLayout_Default); int bit = text.Find('\n'); if (bit!=-1) { wxString str; str = text.Left(bit); dc->DrawText(str,5,height/2-pointsize-2); int length = text.Length(); str = text.Mid(bit+1,length-bit-1); dc->DrawText(str,5,height/2); } else { dc->DrawText(text,5,height/2-7); } } void wxBitmapButtonEx::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 BitmapButtonNormal: case BitmapButtonUp: case BitmapButtonLeave: { int width = DoGetBestSize().GetWidth(); int height = DoGetBestSize().GetHeight(); wxClientDC dc(this); dc.SetPen(*wxGREY_PEN); dc.SetBrush(*wxTRANSPARENT_BRUSH); dc.DrawRectangle(0, 0, width, height); /*wxRect rc = wxRect(0, 0, width, height); dc.DrawRoundedRectangle(rc,5);*/ wxPoint pt[3]; pt[0].x = 1; pt[0].y = height-1; pt[1].x = pt[1].y = 1; pt[2].x = width-1; pt[2].y = 1; dc.SetPen(*wxWHITE_PEN); dc.DrawLines(3,pt); pt[1].x = width-1; pt[1].y = height-1; dc.SetPen(*wxBLACK_PEN); dc.DrawLines(3,pt); int x = normal_bitmap->GetWidth(); int y = (height-normal_bitmap->GetHeight())/2.0; dc.DrawBitmap(*normal_bitmap, width-x-5, y, true); if (!text_font.IsNull()) { dc.SetFont(text_font); } int pointsize = text_font.GetPointSize(); //dc.SetLayoutDirection(wxLayout_Default); int bit = text.Find('\n'); if (bit!=-1) { wxString str; str = text.Left(bit); dc.DrawText(str,5,height/2-pointsize-2); int length = text.Length(); str = text.Mid(bit+1,length-bit-1); dc.DrawText(str,5,height/2); } else { dc.DrawText(text,5,height/2-7); } } //dc.DrawBitmap(*normal_bitmap, 0, 0, true); break; case BitmapButtonEnter: // 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); //wxRect rc = wxRect(0, 0, width, height); //dc.DrawRoundedRectangle(rc,5); // // break; // } // dc.DrawBitmap(*enter_bitmap_, 0, 0, true); break; case BitmapButtonDown: DrawExistBitmap(&dc,down_bitmap,normal_bitmap); break; case BitmapButtonDClick: //DrawExistBitmap(&dc,down_bitmap,normal_bitmap); break; case BitmapButtonDisable: //DrawExistBitmap(&dc,disable_bitmap,normal_bitmap); break; default: { int width = DoGetBestSize().GetWidth(); int height = DoGetBestSize().GetHeight(); wxClientDC dc(this); dc.SetPen(*wxGREY_PEN); dc.SetBrush(*wxTRANSPARENT_BRUSH); dc.DrawRectangle(0, 0, width, height); /*wxRect rc = wxRect(0, 0, width, height); dc.DrawRoundedRectangle(rc,5);*/ wxPoint pt[3]; pt[0].x = 1; pt[0].y = height-1; pt[1].x = pt[1].y = 1; pt[2].x = width-1; pt[2].y = 1; dc.SetPen(*wxWHITE_PEN); dc.DrawLines(3,pt); pt[1].x = width-1; pt[1].y = height-1; dc.SetPen(*wxBLACK_PEN); dc.DrawLines(3,pt); int x = normal_bitmap->GetWidth(); int y = (height-normal_bitmap->GetHeight())/2.0; dc.DrawBitmap(*normal_bitmap, width-x-5, y, true); if (text.IsEmpty()) { break; } if (!text_font.IsNull()) { dc.SetFont(text_font); } int pointsize = text_font.GetPointSize(); //dc.SetLayoutDirection(wxLayout_Default); int bit = text.Find('\n'); if (bit!=-1) { wxString str; str = text.Left(bit); dc.DrawText(str,5,height/2-pointsize-2); int length = text.Length(); str = text.Mid(bit+1,length-bit-1); dc.DrawText(str,5,height/2); } else { dc.DrawText(text,5,height/2-7); } } break; } } void wxBitmapButtonEx::DrawBackground(wxDC* dc) { if (is_used_bg) { dc->DrawBitmap(background_bitmap, 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 wxBitmapButtonEx::OnEnter(wxMouseEvent& event) { /* button_status = BitmapButtonEnter; Refresh(); Update();*/ } void wxBitmapButtonEx::OnLeave(wxMouseEvent& event) { if (!IsEnabled()) { return; } button_status = BitmapButtonLeave; Refresh(); Update(); } void wxBitmapButtonEx::OnDClick(wxMouseEvent& event) { /* button_status = BitmapButtonDown; Refresh(false); Update();*/ } void wxBitmapButtonEx::OnDown(wxMouseEvent& event) { button_status = BitmapButtonDown; Refresh(); Update(); } void wxBitmapButtonEx::OnUp(wxMouseEvent& event) { if (BitmapButtonDown != button_status) { return; } button_status = BitmapButtonUp; Refresh(); Update(); wxCommandEvent myEvent(wxEVT_COMMAND_BUTTON_CLICKED, GetId()); myEvent.SetEventObject(this); GetEventHandler()->ProcessEvent(myEvent); } wxBitmapButtonEx* wxBitmapButtonEx::set_normal_bitmap(wxBitmap* bitmap) { normal_bitmap = bitmap; return this; } wxBitmapButtonEx* wxBitmapButtonEx::set_down_bitmap(wxBitmap* bitmap) { down_bitmap = bitmap; return this; } wxBitmapButtonEx* wxBitmapButtonEx::set_enter_bitmap(wxBitmap* bitmap) { enter_bitmap = bitmap; return this; } bool wxBitmapButtonEx::Enable(bool enable) { if (enable) { button_status = BitmapButtonNormal; } else { button_status = BitmapButtonDisable; } Refresh(false); Update(); return wxControl::Enable(enable); } bool wxBitmapButtonEx::Disable() { return Enable(false); } wxBitmapButtonEx* wxBitmapButtonEx::set_disable_bitmap(wxBitmap* bitmap) { disable_bitmap = bitmap; return this; } wxBitmapButtonEx* wxBitmapButtonEx::set_background(const wxBitmap& bitmap) { is_used_bg = true; background_bitmap = bitmap; return this; } bool wxBitmapButtonEx::set_background_colour(const wxColour& colour) { is_used_bg = false; return wxControl::SetBackgroundColour(colour); } // void wxBitmapButtonEx::set_button_text(wxString str) { text = str; } // void wxBitmapButtonEx::set_text_font(wxFont font) { text_font = font; }
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