create hatch bitmaps on demand, and dispose of them at termination

[wxWidgets.git] / src / gtk / cursor.cpp

diff --git a/src/gtk/cursor.cpp b/src/gtk/cursor.cpp
index 7c431b8efa8b2b762fa66feb348272aed9057e7c..0e778d1f8cafa26321de49733f62583014e0013b 100644 (file)
--- a/src/gtk/cursor.cpp
+++ b/src/gtk/cursor.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        cursor.cpp
+// Name:        src/gtk/cursor.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
@@ -11,24 +11,27 @@
 #include "wx/wxprec.h"
 
 #include "wx/cursor.h"
-#include "wx/utils.h"
-#include "wx/app.h"
 
-#include "wx/gtk/private.h" //for idle stuff
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/utils.h"
+    #include "wx/image.h"
+    #include "wx/colour.h"
+#endif // WX_PRECOMP
 
-#include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
 // wxCursor
 //-----------------------------------------------------------------------------
 
-class wxCursorRefData: public wxObjectRefData
+class wxCursorRefData: public wxGDIRefData
 {
-  public:
-
+public:
     wxCursorRefData();
-    ~wxCursorRefData();
+    virtual ~wxCursorRefData();
+
+    virtual bool IsOk() const { return m_cursor != NULL; }
 
     GdkCursor *m_cursor;
 };
@@ -144,12 +147,30 @@ wxCursor::wxCursor(const char bits[], int width, int  height,
                  data, mask, fg->GetColor(), bg->GetColor(),
                  hotSpotX, hotSpotY );
 
-    g_object_unref (G_OBJECT (data));
-    g_object_unref (G_OBJECT (mask));
+    g_object_unref (data);
+    g_object_unref (mask);
 }
 
 #if wxUSE_IMAGE
 
+static void GetHotSpot(const wxImage& image, int& x, int& y)
+{
+    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
+        x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
+    else
+        x = 0;
+
+    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
+        y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
+    else
+        y = 0;
+
+    if (x < 0 || x >= image.GetWidth())
+        x = 0;
+    if (y < 0 || y >= image.GetHeight())
+        y = 0;
+}
+
 wxCursor::wxCursor( const wxImage & image )
 {
     unsigned char * rgbBits = image.GetData();
@@ -158,6 +179,53 @@ wxCursor::wxCursor( const wxImage & image )
     bool bHasMask = image.HasMask();
     int imagebitcount = (w*h)/8;
 
+    if ( gdk_display_supports_cursor_color(gdk_display_get_default()) )
+    {
+        unsigned char rMask = 0,
+                      gMask = 0,
+                      bMask = 0;
+        if (bHasMask)
+        {
+            rMask = image.GetMaskRed();
+            gMask = image.GetMaskGreen();
+            bMask = image.GetMaskBlue();
+        }
+
+        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, w, h);
+        unsigned char *alpha = image.HasAlpha() ? image.GetAlpha() : NULL;
+        unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
+        int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
+        for ( int y = 0; y < h; y++, out += rowpad )
+        {
+            for ( int x = 0; x < w; x++, out += 4, rgbBits += 3 )
+            {
+                out[0] = rgbBits[0];
+                out[1] = rgbBits[1];
+                out[2] = rgbBits[2];
+                if (bHasMask &&
+                    out[0] == rMask && out[1] == gMask && out[2] == bMask)
+                    out[3] = 0;
+                else
+                    out[3] = alpha ? *alpha : 255;
+                if ( alpha )
+                    ++alpha;
+            }
+        }
+
+        int hotSpotX, hotSpotY;
+        GetHotSpot(image, hotSpotX, hotSpotY);
+
+        m_refData = new wxCursorRefData;
+        M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
+                             (
+                              gdk_display_get_default(),
+                              pixbuf,
+                              hotSpotX, hotSpotY
+                             );
+        g_object_unref (pixbuf);
+        return;
+    }
+
     unsigned char * bits = new unsigned char [imagebitcount];
     unsigned char * maskBits = new unsigned char [imagebitcount];
 
@@ -264,23 +332,8 @@ wxCursor::wxCursor( const wxImage & image )
         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;
+    int hotSpotX, hotSpotY;
+    GetHotSpot(image, hotSpotX, hotSpotY);
 
     GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
                                                   (gchar *) bits, w, h);
@@ -296,8 +349,8 @@ wxCursor::wxCursor( const wxImage & image )
                                 hotSpotX, hotSpotY
                              );
 
-    g_object_unref (G_OBJECT (data));
-    g_object_unref (G_OBJECT (mask));
+    g_object_unref (data);
+    g_object_unref (mask);
     delete [] bits;
     delete [] maskBits;
 }
@@ -308,31 +361,28 @@ wxCursor::~wxCursor()
 {
 }
 
-bool wxCursor::operator == ( const wxCursor& cursor ) const
-{
-    return m_refData == cursor.m_refData;
-}
-
-bool wxCursor::operator != ( const wxCursor& cursor ) const
+GdkCursor *wxCursor::GetCursor() const
 {
-    return m_refData != cursor.m_refData;
+    return M_CURSORDATA->m_cursor;
 }
 
-bool wxCursor::Ok() const
+wxGDIRefData *wxCursor::CreateGDIRefData() const
 {
-    return (m_refData != NULL);
+    return new wxCursorRefData;
 }
 
-GdkCursor *wxCursor::GetCursor() 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
 //-----------------------------------------------------------------------------
 
-extern wxCursor g_globalCursor;
+/* Current cursor, in order to hang on to
+ * cursor handle when setting the cursor globally */
+wxCursor g_globalCursor;
 
 static wxCursor  gs_savedCursor;
 static int       gs_busyCount = 0;
@@ -384,8 +434,6 @@ bool wxIsBusy()
 
 void wxSetCursor( const wxCursor& cursor )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     g_globalCursor = cursor;
+    wxTheApp->WakeUpIdle();
 }