(Push + Dropdown) 按钮 wxWidgets [英] (Push + Dropdown) button wxWidgets
本文介绍了(Push + Dropdown) 按钮 wxWidgets的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要一个带有按钮和下拉按钮的控件.
I need a control that have a push button and a dropdown button.
例如
类似的控件在 wxRibbonButtonBar
中可用,我无法在简单的 wxPanel 中使用它.
Similar control is available in wxRibbonButtonBar
, I am not able to use it in simple wxPanel.
推荐答案
我实现了 SplitButton,它看起来像:
I implemented SplitButton and It look like:
SplitButton.h
#ifndef __SPLIT_BUTTON_H__
#define __SPLIT_BUTTON_H__
#include <wx/wx.h>
#include <wx/menu.h>
class SplitButton : public wxPanel
{
public:
SplitButton(wxWindow *parent,
wxWindowID id,
const wxString& label,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize);
~SplitButton();
wxMenu* GetSplitButtonMenu();
protected:
void OnKillFocus(wxFocusEvent& event);
void OnMouseLeave(wxMouseEvent& event);
void OnMouseEnter(wxMouseEvent& event);
void OnLeftButtonUp(wxMouseEvent& event);
void OnLeftButtonDown(wxMouseEvent& event);
void OnPaint(wxPaintEvent& WXUNUSED(event));
bool Enable(bool enable = true) override;
private:
int m_stateButton = 0;
int m_stateMenu = 0;
bool m_bIsEnable = true;
wxColor m_colorNormal;
wxColor m_colorDisabled;
const int m_arrowButtonWidth = 20;
bool m_bLButtonDown = false;
wxString m_label;
wxMenu* m_pMenu = nullptr;
};
#endif /*__SPLIT_BUTTON_H__*/
SplitButton.cpp
#include "SplitButton.h"
#include <wx/renderer.h>
SplitButton::SplitButton(wxWindow *parent,
wxWindowID id,
const wxString& label,
const wxPoint& pos,
const wxSize& size)
: wxPanel(parent, id, pos, size, wxBORDER_NONE | wxTAB_TRAVERSAL, "DropDownButton"),
m_label(label)
{
m_colorNormal = GetForegroundColour();
m_colorDisabled = GetForegroundColour().MakeDisabled();
if (size == wxDefaultSize)
{
wxSize defaultSize = wxButton::GetDefaultSize();
wxSize textSize = GetTextExtent(m_label);
textSize.SetWidth(textSize.GetWidth() + m_arrowButtonWidth + 20);
SetMinSize(wxSize(textSize.GetWidth(), defaultSize.GetHeight()));
}
Bind(wxEVT_PAINT, &SplitButton::OnPaint, this);
Bind(wxEVT_LEFT_UP, &SplitButton::OnLeftButtonUp, this);
Bind(wxEVT_LEFT_DOWN, &SplitButton::OnLeftButtonDown, this);
Bind(wxEVT_KILL_FOCUS, &SplitButton::OnKillFocus, this);
Bind(wxEVT_LEAVE_WINDOW, &SplitButton::OnMouseLeave, this);
Bind(wxEVT_ENTER_WINDOW, &SplitButton::OnMouseEnter, this);
m_pMenu = new wxMenu();
}
SplitButton::~SplitButton()
{
delete m_pMenu;
m_pMenu = nullptr;
}
wxMenu* SplitButton::GetSplitButtonMenu()
{
return m_pMenu;
}
void SplitButton::OnKillFocus(wxFocusEvent& event)
{
m_stateButton = wxCONTROL_CURRENT;
m_stateMenu = wxCONTROL_CURRENT;
Refresh();
event.Skip();
}
void SplitButton::OnMouseLeave(wxMouseEvent& event)
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
event.Skip();
}
void SplitButton::OnMouseEnter(wxMouseEvent& event)
{
m_stateButton = wxCONTROL_CURRENT;
m_stateMenu = wxCONTROL_CURRENT;
Refresh();
event.Skip();
}
void SplitButton::OnLeftButtonUp(wxMouseEvent& event)
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
int x = -1;
int y = -1;
event.GetPosition(&x, &y);
if (x < (GetSize().GetWidth() - m_arrowButtonWidth))
{
wxEvtHandler* pEventHandler = GetEventHandler();
wxASSERT(pEventHandler);
pEventHandler->CallAfter([=]()
{
wxCommandEvent evt(wxEVT_BUTTON, this->GetId());
evt.SetEventObject(this);
GetEventHandler()->ProcessEvent(evt);
});
}
m_bLButtonDown = false;
event.Skip();
}
void SplitButton::OnLeftButtonDown(wxMouseEvent& event)
{
m_bLButtonDown = true;
int x = -1;
int y = -1;
event.GetPosition(&x, &y);
if (x >= (GetSize().GetWidth() - m_arrowButtonWidth))
{
m_stateButton = 0;
m_stateMenu = wxCONTROL_PRESSED;
Refresh();
wxSize size = GetSize();
wxPoint position;
position.x = 0;
position.y = size.GetHeight();
PopupMenu(m_pMenu, position);
m_stateMenu = 0;
Refresh();
}
else
{
m_stateButton = wxCONTROL_PRESSED;
m_stateMenu = wxCONTROL_PRESSED;
Refresh();
}
event.Skip();
}
void SplitButton::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
wxSize size = GetSize();
const int width = size.GetWidth() - m_arrowButtonWidth;
// Draw first part of button
wxRect r1;
r1.x = 0;
r1.y = 0;
r1.width = width + 2;
r1.height = size.GetHeight();
wxRendererNative::Get().DrawPushButton(this, dc, r1, m_stateButton);
SetForegroundColour(m_bIsEnable ? m_colorNormal : m_colorDisabled);
r1.y += (size.GetHeight() - GetCharHeight()) / 2;
dc.DrawLabel(m_label, r1, wxALIGN_CENTER_HORIZONTAL);
// Draw second part of button
wxRect r2;
r2.x = width - 2;
r2.y = 0;
r2.width = m_arrowButtonWidth;
r2.height = size.GetHeight();
wxRendererNative::Get().DrawPushButton(this, dc, r2, m_stateMenu);
wxRendererNative::Get().DrawDropArrow(this, dc, r2, m_stateMenu);
}
bool SplitButton::Enable(bool enable)
{
m_bIsEnable = enable;
wxPanel::Enable(m_bIsEnable);
if (m_bIsEnable)
{
m_stateButton = 0;
m_stateMenu = 0;
}
else
{
m_stateButton = wxCONTROL_DISABLED;
m_stateMenu = wxCONTROL_DISABLED;
}
wxPaintEvent event;
ProcessEvent(event);
Refresh();
return enable;
}
这篇关于(Push + Dropdown) 按钮 wxWidgets的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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