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580 lines
16 KiB
C++
580 lines
16 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wxBitmapComboBox
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// Purpose: A wxComboBox type button for bitmaps and strings
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// Author: John Labenski
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// Modified by:
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// Created: 11/05/2002
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// RCS-ID:
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// Copyright: (c) John Labenki
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// Licence: wxWidgets licence
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/////////////////////////////////////////////////////////////////////////////
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "bmpcombo.h"
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#endif
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/control.h"
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#include "wx/menu.h"
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#include "wx/settings.h"
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#include "wx/bitmap.h"
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#include "wx/dc.h"
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#include "wx/dcclient.h"
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#include "wx/scrolwin.h"
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#endif // WX_PRECOMP
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#include "wx/things/bmpcombo.h"
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#define BORDER 4
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// ============================================================================
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// wxBitmapComboPopupChild
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// ============================================================================
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BEGIN_EVENT_TABLE(wxBitmapComboPopupChild, wxScrolledWindow)
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EVT_PAINT( wxBitmapComboPopupChild::OnPaint )
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EVT_MOUSE_EVENTS( wxBitmapComboPopupChild::OnMouse )
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EVT_KEY_DOWN( wxBitmapComboPopupChild::OnKeyDown )
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END_EVENT_TABLE()
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wxBitmapComboPopupChild::wxBitmapComboPopupChild(wxWindow *parent, wxBitmapComboBox *owner)
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: wxScrolledWindow( parent, wxID_ANY, wxDefaultPosition,
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wxDefaultSize, wxSUNKEN_BORDER|wxHSCROLL|wxVSCROLL)
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{
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m_bmpCombo = owner;
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m_last_selection = -1;
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SetBackgroundColour(m_bmpCombo->GetBackgroundColour());
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}
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void wxBitmapComboPopupChild::OnPaint( wxPaintEvent &WXUNUSED(event) )
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{
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wxPaintDC dc(this);
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PrepareDC(dc);
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//dc.SetBackground(*wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID));
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//dc.Clear();
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dc.SetFont(m_bmpCombo->GetFont());
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int y = 0, dy = m_bmpCombo->GetItemSize().y;
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wxPoint origin = dc.GetDeviceOrigin();
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wxSize clientSize = GetClientSize();
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for (int n=0; n<m_bmpCombo->GetCount(); n++)
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{
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if (y + dy > -origin.y)
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{
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dc.SetDeviceOrigin(origin.x, origin.y + y + 1);
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m_bmpCombo->DrawItem(dc, n);
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}
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y += dy;
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if (y > -origin.y + clientSize.y)
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break;
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}
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dc.SetDeviceOrigin(0, 0);
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PrepareDC(dc); // reset back
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if (m_bmpCombo->GetSelection() >= 0)
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{
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if (m_last_selection < 0)
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m_last_selection = m_bmpCombo->GetSelection();
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DrawSelection(m_last_selection, dc);
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}
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}
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void wxBitmapComboPopupChild::OnMouse( wxMouseEvent &event )
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{
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wxPoint mouse = event.GetPosition();
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CalcUnscrolledPosition(mouse.x, mouse.y, &mouse.x, &mouse.y);
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//wxPrintf(wxT("bmpcombo mouse %d %d\n"), mouse.x, mouse.y); fflush(stdout);
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// Get selection from mouse pos, force valid
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int sel = m_bmpCombo->GetItemSize().y != 0 ? mouse.y/m_bmpCombo->GetItemSize().y : -1;
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if (sel < 0)
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sel = 0;
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else if (sel >= m_bmpCombo->GetCount())
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sel = m_bmpCombo->GetCount()-1;
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if (event.LeftDown())
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{
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// quickly show user what they selected before hiding it
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if (sel != m_last_selection)
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{
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wxClientDC dc(this);
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PrepareDC(dc);
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if (m_last_selection >= 0)
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DrawSelection(m_last_selection, dc);
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if (sel >= 0)
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DrawSelection(sel, dc);
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m_last_selection = sel;
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}
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m_bmpCombo->SetSelection(sel, true);
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m_bmpCombo->HidePopup();
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return;
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}
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}
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void wxBitmapComboPopupChild::OnKeyDown( wxKeyEvent &event )
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{
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int sel = m_last_selection;
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switch (event.GetKeyCode())
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{
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case WXK_ESCAPE :
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{
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m_bmpCombo->HidePopup();
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return;
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}
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case WXK_RETURN :
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{
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m_bmpCombo->SetSelection(sel, true);
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m_bmpCombo->HidePopup();
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return;
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}
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case WXK_UP : sel--; break;
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case WXK_DOWN : sel++; break;
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default : event.Skip(true); return;
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}
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if (sel < 0)
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sel = 0;
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if (sel >= m_bmpCombo->GetCount())
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sel = m_bmpCombo->GetCount()-1;
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if (sel != m_last_selection)
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{
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wxClientDC dc(this);
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PrepareDC(dc);
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if (m_last_selection>=0)
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DrawSelection(m_last_selection, dc);
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if (sel>=0)
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DrawSelection(sel, dc);
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m_last_selection = sel;
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}
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}
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void wxBitmapComboPopupChild::DrawSelection( int n, wxDC& dc )
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{
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dc.SetBrush(*wxTRANSPARENT_BRUSH);
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dc.SetPen(*wxBLACK_PEN);
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dc.SetLogicalFunction(wxINVERT);
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int height = m_bmpCombo->GetItemSize().y;
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dc.DrawRectangle(0, wxMax(0,height*n-1), GetClientSize().x, height+2);
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dc.SetLogicalFunction(wxCOPY);
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}
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// ==========================================================================
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// wxBitmapComboLabel - the main "window" to the left of the dropdown button
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// ==========================================================================
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IMPLEMENT_DYNAMIC_CLASS( wxBitmapComboLabel, wxWindow )
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BEGIN_EVENT_TABLE(wxBitmapComboLabel, wxWindow)
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EVT_PAINT( wxBitmapComboLabel::OnPaint )
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EVT_CHAR( wxBitmapComboLabel::OnChar )
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END_EVENT_TABLE()
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void wxBitmapComboLabel::OnChar( wxKeyEvent &event )
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{
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switch (event.GetKeyCode())
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{
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case WXK_UP : m_bmpCombo->SetNextSelection(false, true); break;
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case WXK_DOWN : m_bmpCombo->SetNextSelection(true, true); break;
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default : break;
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}
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}
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void wxBitmapComboLabel::OnPaint( wxPaintEvent &WXUNUSED(event) )
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{
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wxPaintDC dc(this);
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dc.SetFont(m_bmpCombo->GetFont());
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//dc.SetBackground(*wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID));
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//dc.Clear();
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dc.SetBrush(*wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID));
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dc.SetPen(*wxTRANSPARENT_PEN);
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dc.DrawRectangle(wxRect(wxPoint(0,0), GetClientSize()));
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const int sel = m_bmpCombo->GetSelection();
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if ((sel >= 0) && (sel < m_bmpCombo->GetCount()))
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m_bmpCombo->DrawItem(dc, sel);
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}
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// ============================================================================
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// wxBitmapComboBox
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// ============================================================================
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IMPLEMENT_DYNAMIC_CLASS( wxBitmapComboBox, DropDownBase )
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BEGIN_EVENT_TABLE(wxBitmapComboBox,DropDownBase)
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EVT_SIZE( wxBitmapComboBox::OnSize )
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END_EVENT_TABLE()
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wxBitmapComboBox::~wxBitmapComboBox()
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{
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while (m_bitmaps.GetCount() > 0u)
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{
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wxBitmap *bmp = (wxBitmap*)m_bitmaps.Item(0);
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m_bitmaps.RemoveAt(0);
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delete bmp;
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}
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}
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void wxBitmapComboBox::Init()
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{
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m_labelWin = NULL;
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m_frozen = true;
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m_selection = 0;
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m_win_border = 0;
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m_label_style = wxBMPCOMBO_LEFT;
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}
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bool wxBitmapComboBox::Create( wxWindow* parent, wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxValidator& val,
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const wxString& name)
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{
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if (!DropDownBase::Create(parent,id,pos,size,wxNO_BORDER|wxCLIP_CHILDREN,val,name))
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return false;
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m_labelWin = new wxBitmapComboLabel(this);
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m_win_border = m_labelWin->GetSize().x - m_labelWin->GetClientSize().x;
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SetBackgroundColour(*wxWHITE);
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m_frozen = false;
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CalcLayout();
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wxSize bestSize = DoGetBestSize();
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SetSize( wxSize(size.x < 0 ? bestSize.x : size.x,
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size.y < 0 ? bestSize.y : size.y) );
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return SetButtonStyle(style);
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}
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#define BMPCOMBO_LABEL_MASK (wxBMPCOMBO_LEFT|wxBMPCOMBO_RIGHT)
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bool wxBitmapComboBox::SetButtonStyle(long style)
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{
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style &= BMPCOMBO_LABEL_MASK; // strip off extras
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int n_styles = 0;
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if (style & wxBMPCOMBO_LEFT) n_styles++;
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if (style & wxBMPCOMBO_RIGHT) n_styles++;
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wxCHECK_MSG(n_styles < 2, false, wxT("Only one wxBitmapComboBox label position allowed"));
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if (n_styles < 1) style |= (m_label_style & BMPCOMBO_LABEL_MASK);
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m_label_style = style;
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m_labelWin->Refresh(true);
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return true;
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}
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void wxBitmapComboBox::OnSize( wxSizeEvent& event )
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{
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event.Skip();
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if (!m_labelWin || !m_dropdownButton) return;
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wxSize size = GetClientSize();
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//wxPrintf(wxT("ComboOnSize %d %d\n"), size.x, size.y);
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int width = size.x - ((wxWindow*)m_dropdownButton)->GetSize().x;
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m_labelWin->SetSize(0, 0, width, size.y);
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}
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void wxBitmapComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
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{
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/*
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wxSize curSize( GetSize() );
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if (width == -1)
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width = curSize.GetWidth();
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if (height == -1)
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height = curSize.GetHeight();
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*/
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DropDownBase::DoSetSize(x, y, width, height, sizeFlags);
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/*
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width = width - ((wxWindow*)m_dropdownButton)->GetSize().x;
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m_labelWin->SetSize(0, 0, width, height);
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*/
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}
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wxSize wxBitmapComboBox::DoGetBestSize() const
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{
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if (GetCount() == 0) return DropDownBase::DoGetBestSize();
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wxSize size(0,0);
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size.x = m_labelSize.x + m_bitmapSize.x + (m_labelSize.x != 0 ? BORDER*2 : 0);
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size.y = wxMax(m_labelSize.y, m_bitmapSize.y) + m_win_border;
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size.x += m_win_border + DROPDOWN_DROP_WIDTH;
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if (size.y < DROPDOWN_DROP_HEIGHT) size.y = DROPDOWN_DROP_HEIGHT;
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return size;
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}
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int wxBitmapComboBox::DoGetBestDropHeight(int max_height)
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{
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int count = GetCount();
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if (count < 1) return -1;
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// add one for drawing selection rect
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return wxMin(m_itemSize.y*count + m_win_border+1, max_height);
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}
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bool wxBitmapComboBox::DoShowPopup()
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{
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if (m_popupWin)
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{
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wxBitmapComboPopupChild *popChild = new wxBitmapComboPopupChild(m_popupWin, this);
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m_popupWin->SetChild(popChild);
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if (popChild)
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{
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popChild->m_last_selection = GetSelection();
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int scr_pos = m_selection > 0 ? m_selection*m_itemSize.y-1 : 0;
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int count = GetCount();
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popChild->SetScrollbars(1, 1, m_itemSize.x, m_itemSize.y*count+1, 0, scr_pos);
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}
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}
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return DropDownBase::DoShowPopup();
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}
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void wxBitmapComboBox::HidePopup()
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{
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DropDownBase::HidePopup();
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// FIXME - MSW destroys the sunken border of labelWin when in toolbar
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// a refresh doesn't help
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}
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void wxBitmapComboBox::Thaw()
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{
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m_frozen = false;
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CalcLayout();
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if (m_labelWin)
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m_labelWin->Refresh();
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}
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void wxBitmapComboBox::CalcLayout()
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{
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if (m_frozen) return;
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int height = 0, width = 0;
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m_itemSize = m_labelSize = m_bitmapSize = wxSize(0,0);
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int count = GetCount();
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wxBitmap bmp;
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for (int n=0; n<count; n++)
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{
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bmp = GetBitmap(n);
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if (bmp.Ok())
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{
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width = bmp.GetWidth();
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height = bmp.GetHeight();
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if (width > m_bitmapSize.x) m_bitmapSize.x = width;
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if (height > m_bitmapSize.y) m_bitmapSize.y = height;
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}
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if (!m_labels[n].IsEmpty())
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{
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GetTextExtent(m_labels[n], &width, &height);
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if (width > m_labelSize.x) m_labelSize.x = width;
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if (height > m_labelSize.y) m_labelSize.y = height;
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}
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}
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m_itemSize.x = m_labelSize.x + m_bitmapSize.x + m_win_border;
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m_itemSize.y = wxMax(m_labelSize.y, m_bitmapSize.y) + m_win_border;
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}
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void wxBitmapComboBox::CalcLabelBitmapPos(int n, const wxSize &area, wxPoint &labelPos, wxPoint &bitmapPos) const
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{
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labelPos = bitmapPos = wxPoint(0,0);
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int bw = 0, bh = 0;
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int lw = 0, lh = 0;
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if (GetBitmap(n).Ok())
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{
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bw = GetBitmap(n).GetWidth();
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bh = GetBitmap(n).GetHeight();
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}
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if (!m_labels[n].IsEmpty())
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{
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GetTextExtent(m_labels[n], &lw, &lh);
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}
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if (m_bitmapSize.x == 0) // There aren't any bitmaps, left align label
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{
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labelPos = wxPoint(BORDER, (area.y-lh)/2);
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}
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else if (m_labelSize.x == 0) // There aren't any labels, center bitmap
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{
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bitmapPos = wxPoint((area.x-bw)/2, (area.y-bh)/2);
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}
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else if ((m_label_style & wxBMPCOMBO_RIGHT) != 0)
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{
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labelPos = wxPoint(m_bitmapSize.x+BORDER, (area.y - lh)/2);
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bitmapPos = wxPoint((m_bitmapSize.x-bw)/2, (area.y - bh)/2);
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}
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else // if ((m_label_style & wxBMPCOMBO_LEFT) != 0)
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{
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labelPos = wxPoint(BORDER, (area.y - lh)/2);
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bitmapPos = wxPoint(BORDER*2 + m_labelSize.x + (area.x - BORDER*2 - m_labelSize.x - bw)/2, (area.y - bh)/2);
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}
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}
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void wxBitmapComboBox::DrawItem(wxDC &dc, int n) const
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{
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wxSize itemSize(GetItemSize()); //((wxWindow*)GetLabelWindow())->GetClientSize().x, dy);
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wxPoint labelPos, bitmapPos;
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CalcLabelBitmapPos(n, itemSize, labelPos, bitmapPos);
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if (GetBitmap(n).Ok())
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dc.DrawBitmap(GetBitmap(n), bitmapPos.x, bitmapPos.y, true);
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if (!GetLabel(n).IsEmpty())
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dc.DrawText(GetLabel(n), labelPos.x, labelPos.y);
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}
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void wxBitmapComboBox::Append(const wxString &label, const wxBitmap &bitmap, int count)
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{
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for (int n=0; n<count; n++)
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{
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m_labels.Add(label);
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m_bitmaps.Add(new wxBitmap(bitmap));
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}
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CalcLayout();
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}
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void wxBitmapComboBox::Insert(int n, const wxString &label, const wxBitmap &bitmap)
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{
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wxCHECK_RET((n>=0) && (n<GetCount()), wxT("invalid index"));
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m_labels.Insert(label, n);
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m_bitmaps.Insert(new wxBitmap(bitmap), n);
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CalcLayout();
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}
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void wxBitmapComboBox::Clear()
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{
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m_labels.Clear();
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while (m_bitmaps.GetCount() > 0u)
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{
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wxBitmap *bmp = (wxBitmap*)m_bitmaps.Item(0);
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m_bitmaps.RemoveAt(0);
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delete bmp;
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}
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CalcLayout();
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}
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void wxBitmapComboBox::Delete( int n, int count )
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{
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wxCHECK_RET((n>=0) && (count>0) && (n+count<=GetCount()), wxT("invalid index"));
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for (int i=0; i<count; i++)
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{
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m_labels.RemoveAt(n);
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wxBitmap *bmp = (wxBitmap*)m_bitmaps.Item(n);
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m_bitmaps.RemoveAt(n);
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delete bmp;
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}
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CalcLayout();
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}
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wxString wxBitmapComboBox::GetLabel( int n ) const
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{
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wxCHECK_MSG((n>=0) && (n < GetCount()), wxEmptyString, wxT("invalid index"));
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return m_labels[n];
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}
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wxBitmap wxBitmapComboBox::GetBitmap( int n ) const
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{
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wxCHECK_MSG((n>=0) && (n < GetCount()), wxNullBitmap, wxT("invalid index"));
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return *(wxBitmap *)m_bitmaps.Item(n);
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}
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void wxBitmapComboBox::SetSelection( int n, bool send_event )
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{
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wxCHECK_RET((n>=0) && (n < GetCount()), wxT("invalid index"));
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m_selection = n;
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m_labelWin->Refresh(true);
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if (send_event)
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{
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wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
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event.SetInt( m_selection );
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event.SetEventObject( this );
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GetEventHandler()->ProcessEvent( event );
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}
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}
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void wxBitmapComboBox::SetNextSelection(bool foward, bool send_event)
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{
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const int count = GetCount();
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if (count == 0) return;
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int sel = m_selection;
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if (foward)
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{
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if ((sel < 0) || (sel == count - 1))
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sel = 0;
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else
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sel++;
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}
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else
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{
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if (sel <= 0)
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sel = count - 1;
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else
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sel--;
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}
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SetSelection(sel, send_event);
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}
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void wxBitmapComboBox::SetLabel(int n, const wxString &label)
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{
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wxCHECK_RET( (n>=0) && (n < GetCount()), wxT("invalid index"));
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m_labels[n] = label;
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CalcLayout();
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if (n == m_selection) m_labelWin->Refresh(false);
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}
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void wxBitmapComboBox::SetBitmap(int n, const wxBitmap &bitmap)
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{
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wxCHECK_RET((n>=0) && (n < GetCount()), wxT("invalid index"));
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*((wxBitmap*)m_bitmaps.Item(n)) = bitmap;
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CalcLayout();
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if (n == m_selection) m_labelWin->Refresh(false);
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}
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bool wxBitmapComboBox::SetBackgroundColour(const wxColour &colour)
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{
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// not a failure for wx 2.5.x since InheritAttributes calls this
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// from wxWindow::Create
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if (m_labelWin)
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{
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m_labelWin->SetBackgroundColour(colour);
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m_labelWin->Refresh();
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}
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return DropDownBase::SetBackgroundColour(colour);
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}
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