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[wxWidgets.git] / src / gtk1 / cursor.cpp
diff --git a/src/gtk1/cursor.cpp b/src/gtk1/cursor.cpp
index 1f84b80f69cb51d89913d26d9618b1cb9b339d39..3b14510edbbe134402f11879372c9c67a798e749 100644 (file)
--- a/src/gtk1/cursor.cpp
+++ b/src/gtk1/cursor.cpp
@@ -1,43 +1,54 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////
-// Name:        cursor.cpp
+// Name:        src/gtk1/cursor.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 
-
-#ifdef __GNUG__
-#pragma implementation "cursor.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #include "wx/cursor.h"
 
 
 #include "wx/cursor.h"
 
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/utils.h"
+#endif // WX_PRECOMP
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+
+//-----------------------------------------------------------------------------
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+
 //-----------------------------------------------------------------------------
 // wxCursor
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxCursor
 //-----------------------------------------------------------------------------
 
-class wxCursorRefData: public wxObjectRefData
+class wxCursorRefData : public wxGDIRefData
 {
 {
-  public:
-  
-    wxCursorRefData(void);
-    ~wxCursorRefData(void);
-  
+public:
+    wxCursorRefData();
+    virtual ~wxCursorRefData();
+
     GdkCursor *m_cursor;
 };
 
     GdkCursor *m_cursor;
 };
 
-wxCursorRefData::wxCursorRefData(void)
+wxCursorRefData::wxCursorRefData()
 {
 {
-  m_cursor = NULL;
-};
+    m_cursor = (GdkCursor *) NULL;
+}
 
 
-wxCursorRefData::~wxCursorRefData(void)
+wxCursorRefData::~wxCursorRefData()
 {
 {
-  if (m_cursor) gdk_cursor_destroy( m_cursor );
-};
+    if (m_cursor) gdk_cursor_destroy( m_cursor );
+}
 
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 
@@ -45,129 +56,338 @@ wxCursorRefData::~wxCursorRefData(void)
 
 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
 
-wxCursor::wxCursor(void)
+wxCursor::wxCursor()
 {
 {
-};
+
+}
 
 wxCursor::wxCursor( int cursorId )
 {
 
 wxCursor::wxCursor( int cursorId )
 {
-  m_refData = new wxCursorRefData();
-  
-  GdkCursorType gdk_cur = GDK_LEFT_PTR;
-  switch (cursorId)
-  {
-    case wxCURSOR_HAND:       gdk_cur = GDK_HAND1; break;
-    case wxCURSOR_CROSS:      gdk_cur = GDK_CROSSHAIR; break;
-    case wxCURSOR_SIZEWE:     gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
-    case wxCURSOR_SIZENS:     gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
-    case wxCURSOR_WAIT:       gdk_cur = GDK_WATCH; break;
-    case wxCURSOR_WATCH:      gdk_cur = GDK_WATCH; break;
-    case wxCURSOR_SIZING:     gdk_cur = GDK_SIZING; break;
-    case wxCURSOR_SPRAYCAN:   gdk_cur = GDK_SPRAYCAN; break;
-    case wxCURSOR_IBEAM:      gdk_cur = GDK_XTERM; break;
-    case wxCURSOR_PENCIL:     gdk_cur = GDK_PENCIL; break;
-    case wxCURSOR_NO_ENTRY:   gdk_cur = GDK_PIRATE; break;
-  };
-  
-  M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
-  
+    m_refData = new wxCursorRefData();
+
+    GdkCursorType gdk_cur = GDK_LEFT_PTR;
+    switch (cursorId)
+    {
+        case wxCURSOR_BLANK:
+            {
+                static const gchar bits[] = { 0 };
+                static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 };
+
+                GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
+                M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
+                                                                    pixmap,
+                                                                    &color,
+                                                                    &color,
+                                                                    0, 0);
+            }
+            return;
+
+        case wxCURSOR_ARROW:            // fall through to default
+        case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
+        case wxCURSOR_RIGHT_ARROW:      gdk_cur = GDK_RIGHT_PTR; break;
+        case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
+        case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
+        case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
+        case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
+        case wxCURSOR_ARROWWAIT:
+        case wxCURSOR_WAIT:
+        case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
+        case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
+        case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
+        case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
+        case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
+        case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
+        case wxCURSOR_SIZENWSE:
+        case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
+        case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
+        case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
+        case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
+        case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
+        case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
+        case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
+        case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
+        case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;
+
+        case wxCURSOR_POINT_LEFT:       gdk_cur = GDK_SB_LEFT_ARROW; break;
+        case wxCURSOR_POINT_RIGHT:      gdk_cur = GDK_SB_RIGHT_ARROW; break;
 /*
 /*
-  do that yourself
-   
-  wxCURSOR_BULLSEYE,
-  wxCURSOR_CHAR,
-  wxCURSOR_LEFT_BUTTON,
-  wxCURSOR_MAGNIFIER,
-  wxCURSOR_MIDDLE_BUTTON,
-  wxCURSOR_NO_ENTRY,
-  wxCURSOR_PAINT_BRUSH,
-  wxCURSOR_POINT_LEFT,
-  wxCURSOR_POINT_RIGHT,
-  wxCURSOR_QUESTION_ARROW,
-  wxCURSOR_RIGHT_BUTTON,
-  wxCURSOR_SIZENESW,
-  wxCURSOR_SIZENS,
-  wxCURSOR_SIZENWSE,
-  wxCURSOR_SIZEWE,
-  wxCURSOR_BLANK
-,
-  wxCURSOR_CROSS_REVERSE,
-  wxCURSOR_DOUBLE_ARROW,
-  wxCURSOR_BASED_ARROW_UP,
-  wxCURSOR_BASED_ARROW_DOWN
+        case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
+        case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
+        case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
+        case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
 */
 */
-   
-};
 
 
-wxCursor::wxCursor( const wxCursor &cursor )
-{
-  Ref( cursor );
-};
+        default:
+            wxFAIL_MSG(wxT("unsupported cursor type"));
+            // will use the standard one
+            break;
+    }
 
 
-wxCursor::wxCursor( const wxCursor *cursor )
-{
-  UnRef();
-  if (cursor) Ref( *cursor );
-};
+    M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
+}
 
 
-wxCursor::~wxCursor(void)
+extern GtkWidget *wxGetRootWindow();
+
+wxCursor::wxCursor(const char bits[], int width, int  height,
+                   int hotSpotX, int hotSpotY,
+                   const char maskBits[], const wxColour *fg, const wxColour *bg)
 {
 {
-};
+    if (!maskBits)
+        maskBits = bits;
+    if (!fg)
+        fg = wxBLACK;
+    if (!bg)
+        bg = wxWHITE;
+    if (hotSpotX < 0 || hotSpotX >= width)
+        hotSpotX = 0;
+    if (hotSpotY < 0 || hotSpotY >= height)
+        hotSpotY = 0;
+
+    GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
+    GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height);
+
+    m_refData = new wxCursorRefData;
+    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
+                 data, mask, fg->GetColor(), bg->GetColor(),
+                 hotSpotX, hotSpotY );
+
+    gdk_bitmap_unref( data );
+    gdk_bitmap_unref( mask );
+}
+
+#if wxUSE_IMAGE
 
 
-wxCursor& wxCursor::operator = ( const wxCursor& cursor )
+wxCursor::wxCursor( const wxImage & image )
 {
 {
-  if (*this == cursor) return (*this); 
-  Ref( cursor ); 
-  return *this; 
-};
+    unsigned char * rgbBits = image.GetData();
+    int w = image.GetWidth() ;
+    int h = image.GetHeight();
+    bool bHasMask = image.HasMask();
+    int imagebitcount = (w*h)/8;
+
+    unsigned char * bits = new unsigned char [imagebitcount];
+    unsigned char * maskBits = new unsigned char [imagebitcount];
+
+    int i, j, i8; unsigned char c, cMask;
+    for (i=0; i<imagebitcount; i++)
+    {
+        bits[i] = 0;
+        i8 = i * 8;
+
+        cMask = 1;
+        for (j=0; j<8; j++)
+        {
+            // possible overflow if we do the summation first ?
+            c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3;
+            //if average value is > mid grey
+            if (c>127)
+                bits[i] = bits[i] | cMask;
+            cMask = cMask * 2;
+        }
+    }
+
+    unsigned long keyMaskColor;
+    if (bHasMask)
+    {
+        unsigned char
+            r = image.GetMaskRed(),
+            g = image.GetMaskGreen(),
+            b = image.GetMaskBlue();
+
+        for (i=0; i<imagebitcount; i++)
+        {
+            maskBits[i] = 0x0;
+            i8 = i * 8;
+
+            cMask = 1;
+            for (j=0; j<8; j++)
+            {
+                if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b)
+                    maskBits[i] = maskBits[i] | cMask;
+                cMask = cMask * 2;
+            }
+        }
+
+        keyMaskColor = (r << 16) | (g << 8) | b;
+    }
+    else // no mask
+    {
+        for (i=0; i<imagebitcount; i++)
+            maskBits[i] = 0xFF;
+
+        // init it to avoid compiler warnings
+        keyMaskColor = 0;
+    }
 
 
-bool wxCursor::operator == ( const wxCursor& cursor )
+    // find the most frequent color(s)
+    wxImageHistogram histogram;
+    image.ComputeHistogram(histogram);
+
+    // colors as rrggbb
+    unsigned long key;
+    unsigned long value;
+
+    long colMostFreq = 0;
+    unsigned long nMost = 0;
+    long colNextMostFreq = 0;
+    unsigned long nNext = 0;
+    for ( wxImageHistogram::iterator entry = histogram.begin();
+          entry != histogram.end();
+          ++entry )
+    {
+        value = entry->second.value;
+        key = entry->first;
+        if ( !bHasMask || (key != keyMaskColor) )
+        {
+            if (value > nMost)
+            {
+                nMost = value;
+                colMostFreq = key;
+            }
+            else if (value > nNext)
+            {
+                nNext = value;
+                colNextMostFreq = key;
+            }
+        }
+    }
+
+    wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
+                             (unsigned char)(colMostFreq >> 8),
+                             (unsigned char)(colMostFreq) );
+
+    wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
+                             (unsigned char)(colNextMostFreq >> 8),
+                             (unsigned char)(colNextMostFreq) );
+
+    int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
+    int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
+
+    if (bg_intensity > fg_intensity)
+    {
+        //swap fg and bg
+        wxColour tmp = fg;
+        fg = bg;
+        bg = tmp;
+    }
+
+    int hotSpotX;
+    int hotSpotY;
+
+    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
+        hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
+    else
+        hotSpotX = 0;
+
+    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
+        hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
+    else
+        hotSpotY = 0;
+
+    if (hotSpotX < 0 || hotSpotX >= w)
+        hotSpotX = 0;
+    if (hotSpotY < 0 || hotSpotY >= h)
+        hotSpotY = 0;
+
+    GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
+                                                  (gchar *) bits, w, h);
+    GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
+                                                  (gchar *) maskBits, w, h);
+
+    m_refData = new wxCursorRefData;
+    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
+                             (
+                                data,
+                                mask,
+                                fg.GetColor(), bg.GetColor(),
+                                hotSpotX, hotSpotY
+                             );
+
+    gdk_bitmap_unref( data );
+    gdk_bitmap_unref( mask );
+    delete [] bits;
+    delete [] maskBits;
+}
+
+#endif // wxUSE_IMAGE
+
+wxCursor::~wxCursor()
 {
 {
-  return m_refData == cursor.m_refData; 
-};
+}
 
 
-bool wxCursor::operator != ( const wxCursor& cursor )
+GdkCursor *wxCursor::GetCursor() const
 {
 {
-  return m_refData != cursor.m_refData; 
-};
+    return M_CURSORDATA->m_cursor;
+}
 
 
-bool wxCursor::Ok(void) const
+wxGDIRefData *wxCursor::CreateGDIRefData() const
 {
 {
-  return TRUE;
-};
+    return new wxCursorRefData;
+}
 
 
-GdkCursor *wxCursor::GetCursor(void) const
+wxGDIRefData *wxCursor::CloneGDIRefData(const wxGDIRefData *data) const
 {
 {
-  return M_CURSORDATA->m_cursor;
-};
+    return new wxCursorRefData(*wx_static_cast(const wxCursorRefData *, data));
+}
 
 //-----------------------------------------------------------------------------
 // busy cursor routines
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // busy cursor routines
 //-----------------------------------------------------------------------------
 
-bool g_isBusy = FALSE;
+extern wxCursor g_globalCursor;
+
+static wxCursor  gs_savedCursor;
+static int       gs_busyCount = 0;
 
 
-void wxEndBusyCursor(void)
+const wxCursor &wxBusyCursor::GetStoredCursor()
 {
 {
-  g_isBusy = FALSE;
-};
+    return gs_savedCursor;
+}
 
 
-void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
+const wxCursor wxBusyCursor::GetBusyCursor()
 {
 {
-  g_isBusy = TRUE;
-};
+    return wxCursor(wxCURSOR_WATCH);
+}
 
 
-bool wxIsBusy(void)
+void wxEndBusyCursor()
 {
 {
-  return g_isBusy;
-};
+    if (--gs_busyCount > 0)
+        return;
 
 
-void wxSetCursor( const wxCursor& cursor )
+    wxSetCursor( gs_savedCursor );
+    gs_savedCursor = wxNullCursor;
+
+    if (wxTheApp)
+        wxTheApp->ProcessIdle();
+}
+
+void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) )
 {
 {
-  extern wxCursor *g_globalCursor;
-  if (g_globalCursor) (*g_globalCursor) = cursor;
+    if (gs_busyCount++ > 0)
+        return;
 
 
-  if (cursor.Ok()) {};
-};
+    wxASSERT_MSG( !gs_savedCursor.Ok(),
+                  wxT("forgot to call wxEndBusyCursor, will leak memory") );
 
 
+    gs_savedCursor = g_globalCursor;
+
+    wxSetCursor( wxCursor(wxCURSOR_WATCH) );
+
+    if (wxTheApp)
+        wxTheApp->ProcessIdle();
+
+    gdk_flush();
+}
+
+bool wxIsBusy()
+{
+    return gs_busyCount > 0;
+}
+
+void wxSetCursor( const wxCursor& cursor )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
 
 
+    g_globalCursor = cursor;
+}
wxWidgets (Impactor)