new file added

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

diff --git a/src/gtk/cursor.cpp b/src/gtk/cursor.cpp
index 6da4ba4d9627544192afd7de209c0ad1532fe994..152796d630e992b875fcaf28ef888a332a127834 100644 (file)
--- a/src/gtk/cursor.cpp
+++ b/src/gtk/cursor.cpp
@@ -21,6 +21,8 @@
 #endif // WX_PRECOMP
 
 #include <gtk/gtk.h>
 #endif // WX_PRECOMP
 
 #include <gtk/gtk.h>

+#include "wx/gtk/private/object.h"
+#include "wx/gtk/private/gtk2-compat.h"

 
 //-----------------------------------------------------------------------------
 // wxCursorRefData
 
 //-----------------------------------------------------------------------------
 // wxCursorRefData


@@ -35,6 +37,11 @@ public:
     virtual bool IsOk() const { return m_cursor != NULL; }
 
     GdkCursor *m_cursor;
     virtual bool IsOk() const { return m_cursor != NULL; }
 
     GdkCursor *m_cursor;

+
+private:
+    // There is no way to copy m_cursor so we can't implement a copy ctor
+    // properly.
+    wxDECLARE_NO_COPY_CLASS(wxCursorRefData);

 };
 
 wxCursorRefData::wxCursorRefData()
 };
 
 wxCursorRefData::wxCursorRefData()


@@ -92,27 +99,68 @@ wxCursor::wxCursor(const char bits[], int width, int height,
                    int hotSpotX, int hotSpotY,
                    const char maskBits[], const wxColour *fg, const wxColour *bg)
 {
                    int hotSpotX, int hotSpotY,
                    const char maskBits[], const wxColour *fg, const wxColour *bg)
 {

+    m_refData = new wxCursorRefData;
+    if (hotSpotX < 0 || hotSpotX >= width)
+        hotSpotX = 0;
+    if (hotSpotY < 0 || hotSpotY >= height)
+        hotSpotY = 0;
+#ifdef __WXGTK3__
+    wxBitmap bitmap(bits, width, height);
+    if (maskBits)
+        bitmap.SetMask(new wxMask(wxBitmap(maskBits, width, height)));
+    GdkPixbuf* pixbuf = bitmap.GetPixbuf();
+    if (fg || bg)
+    {
+        const int stride = gdk_pixbuf_get_rowstride(pixbuf);
+        const int n_channels = gdk_pixbuf_get_n_channels(pixbuf);
+        guchar* data = gdk_pixbuf_get_pixels(pixbuf);
+        for (int j = 0; j < height; j++, data += stride)
+        {
+            guchar* p = data;
+            for (int i = 0; i < width; i++, p += n_channels)
+            {
+                if (p[0])
+                {
+                    if (fg)
+                    {
+                        p[0] = fg->Red();
+                        p[1] = fg->Green();
+                        p[2] = fg->Blue();
+                    }
+                }
+                else
+                {
+                    if (bg)
+                    {
+                        p[0] = bg->Red();
+                        p[1] = bg->Green();
+                        p[2] = bg->Blue();
+                    }
+                }
+            }
+        }
+    }
+    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf(gtk_widget_get_display(wxGetRootWindow()), pixbuf, hotSpotX, hotSpotY);
+#else

     if (!maskBits)
         maskBits = bits;
     if (!fg)
         fg = wxBLACK;
     if (!bg)
         bg = wxWHITE;
     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);
+    GdkBitmap* data = gdk_bitmap_create_from_data(
+        gtk_widget_get_window(wxGetRootWindow()), const_cast<char*>(bits), width, height);
+    GdkBitmap* mask = gdk_bitmap_create_from_data(
+        gtk_widget_get_window(wxGetRootWindow()), const_cast<char*>(maskBits), width, height);

 
 

-    m_refData = new wxCursorRefData;

     M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
                  data, mask, fg->GetColor(), bg->GetColor(),
                  hotSpotX, hotSpotY );
 
     g_object_unref (data);
     g_object_unref (mask);
     M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
                  data, mask, fg->GetColor(), bg->GetColor(),
                  hotSpotX, hotSpotY );
 
     g_object_unref (data);
     g_object_unref (mask);

+#endif

 }
 
 wxCursor::~wxCursor()
 }
 
 wxCursor::~wxCursor()


@@ -126,6 +174,9 @@ void wxCursor::InitFromStock( wxStockCursor cursorId )
     GdkCursorType gdk_cur = GDK_LEFT_PTR;
     switch (cursorId)
     {
     GdkCursorType gdk_cur = GDK_LEFT_PTR;
     switch (cursorId)
     {

+#ifdef __WXGTK3__
+        case wxCURSOR_BLANK:            gdk_cur = GDK_BLANK_CURSOR; break;
+#else

         case wxCURSOR_BLANK:
             {
                 const char bits[] = { 0 };
         case wxCURSOR_BLANK:
             {
                 const char bits[] = { 0 };


@@ -140,7 +191,7 @@ void wxCursor::InitFromStock( wxStockCursor cursorId )
                 g_object_unref(pixmap);
             }
             return;
                 g_object_unref(pixmap);
             }
             return;

-
+#endif

         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_ARROW:            // fall through to default
         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
         case wxCURSOR_RIGHT_ARROW:      gdk_cur = GDK_RIGHT_PTR; break;


@@ -187,153 +238,42 @@ void wxCursor::InitFromStock( wxStockCursor cursorId )
 
 #if wxUSE_IMAGE
 
 
 #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;
-}
-

 void wxCursor::InitFromImage( const wxImage & image )
 {
 void wxCursor::InitFromImage( const wxImage & image )
 {

-    int w = image.GetWidth() ;
-    int h = image.GetHeight();
-    bool bHasMask = image.HasMask();
-    int hotSpotX, hotSpotY;
-    GetHotSpot(image, hotSpotX, hotSpotY);
-    m_refData = new wxCursorRefData;
-    wxImage image_copy(image);
-
-    GdkDisplay* display = gdk_drawable_get_display(wxGetRootWindow()->window);
-    if (gdk_display_supports_cursor_color(display))
-    {
-        if (!image.HasAlpha())
-        {
-            // add alpha, so wxBitmap will convert to pixbuf format
-            image_copy.InitAlpha();
-        }
-        wxBitmap bitmap(image_copy);
-        wxASSERT(bitmap.HasPixbuf());
-        M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
-                             (
-                              display,
-                              bitmap.GetPixbuf(),
-                              hotSpotX, hotSpotY
-                             );
-        return;
-    }
-
-    unsigned long keyMaskColor = 0;
-    GdkPixmap* mask;
-    if (bHasMask)
-    {
-        keyMaskColor = wxImageHistogram::MakeKey(
-            image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
-        // get mask before image is modified
-        wxBitmap bitmap(image, 1);
-        mask = bitmap.GetMask()->GetBitmap();
-        g_object_ref(mask);
-    }
-    else
-    {
-        const int size = ((w + 7) / 8) * h;
-        char* bits = new char[size];
-        memset(bits, 0xff, size);
-        mask = gdk_bitmap_create_from_data(
-            wxGetRootWindow()->window, bits, w, h);
-        delete[] bits;
-    }
-
-    // modify image so wxBitmap can be used to convert to pixmap
-    image_copy.SetMask(false);
-    int i, j;
-    wxByte* data = image_copy.GetData();
-    for (j = 0; j < h; j++)
+    const int w = image.GetWidth();
+    const int h = image.GetHeight();
+    const guchar* alpha = image.GetAlpha();
+    const bool hasMask = image.HasMask();
+    int hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
+    int hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
+    if (hotSpotX < 0 || hotSpotX > w) hotSpotX = 0;
+    if (hotSpotY < 0 || hotSpotY > h) hotSpotY = 0;
+    GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(image.GetData(), GDK_COLORSPACE_RGB, false, 8, w, h, w * 3, NULL, NULL);
+    if (alpha || hasMask)

     {
     {

-        for (i = 0; i < w; i++, data += 3)
+        guchar r = 0, g = 0, b = 0;
+        if (hasMask)

         {
         {

-            //if average value is > mid grey
-            if (int(data[0]) + data[1] + data[2] >= 3 * 128)
-            {
-                // wxBitmap only converts (255,255,255) to white
-                data[0] = 255;
-                data[1] = 255;
-                data[2] = 255;
-            }
+            r = image.GetMaskRed();
+            g = image.GetMaskGreen();
+            b = image.GetMaskBlue();

         }
         }

-    }
-    wxBitmap bitmap(image_copy, 1);
-
-    // find the most frequent color(s)
-    wxImageHistogram histogram;
-    image.ComputeHistogram(histogram);
-
-    long colMostFreq = 0;
-    unsigned long nMost = 0;
-    long colNextMostFreq = 0;
-    unsigned long nNext = 0;
-    for ( wxImageHistogram::iterator entry = histogram.begin();
-          entry != histogram.end();
-          ++entry )
-    {
-        unsigned long key = entry->first;
-        if ( !bHasMask || (key != keyMaskColor) )
+        GdkPixbuf* pixbuf0 = pixbuf;
+        pixbuf = gdk_pixbuf_add_alpha(pixbuf, hasMask, r, g, b);
+        g_object_unref(pixbuf0);
+        if (alpha)

         {
         {

-            unsigned long value = entry->second.value;
-            if (value > nMost)
-            {
-                nNext = nMost;
-                colNextMostFreq = colMostFreq;
-                nMost = value;
-                colMostFreq = key;
-            }
-            else if (value > nNext)
-            {
-                nNext = value;
-                colNextMostFreq = key;
-            }
+            guchar* d = gdk_pixbuf_get_pixels(pixbuf);
+            const int stride = gdk_pixbuf_get_rowstride(pixbuf);
+            for (int j = 0; j < h; j++, d += stride)
+                for (int i = 0; i < w; i++, alpha++)
+                    if (d[4 * i + 3])
+                        d[4 * i + 3] = *alpha;

         }
     }
         }
     }

-
-    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;
-    }
-
-    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
-                             (
-                                bitmap.GetPixmap(),
-                                mask,
-                                fg.GetColor(), bg.GetColor(),
-                                hotSpotX, hotSpotY
-                             );
-
-    g_object_unref (mask);
+    m_refData = new wxCursorRefData;
+    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf(gtk_widget_get_display(wxGetRootWindow()), pixbuf, hotSpotX, hotSpotY);
+    g_object_unref(pixbuf);

 }
 
 #endif // wxUSE_IMAGE
 }
 
 #endif // wxUSE_IMAGE


@@ -348,9 +288,17 @@ wxGDIRefData *wxCursor::CreateGDIRefData() const
     return new wxCursorRefData;
 }
 
     return new wxCursorRefData;
 }
 

-wxGDIRefData *wxCursor::CloneGDIRefData(const wxGDIRefData *data) const
+wxGDIRefData *
+wxCursor::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const

 {
 {

-    return new wxCursorRefData(*static_cast<const wxCursorRefData *>(data));
+    // TODO: We can't clone GDK cursors at the moment. To do this we'd need
+    //       to remember the original data from which the cursor was created
+    //       (i.e. standard cursor type or the bitmap) or use
+    //       gdk_cursor_get_cursor_type() (which is in 2.22+ only) and
+    //       gdk_cursor_get_image().
+    wxFAIL_MSG( wxS("Cloning cursors is not implemented in wxGTK.") );
+
+    return new wxCursorRefData;

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -374,16 +322,15 @@ const wxCursor wxBusyCursor::GetBusyCursor()
     return wxCursor(wxCURSOR_WATCH);
 }
 
     return wxCursor(wxCURSOR_WATCH);
 }
 

-static void UpdateCursors(const wxWindowList& list, GdkDisplay*& display)
+static void UpdateCursors(GdkDisplay** display)

 {
 {

-    wxWindowList::const_iterator i = list.begin();
-    for (size_t n = list.size(); n--; ++i)
+    wxWindowList::const_iterator i = wxTopLevelWindows.begin();
+    for (size_t n = wxTopLevelWindows.size(); n--; ++i)

     {
         wxWindow* win = *i;
     {
         wxWindow* win = *i;

-        if (display == NULL && win->m_widget && win->m_widget->window)
-            display = gdk_drawable_get_display(win->m_widget->window);
-        win->GTKUpdateCursor(true, false);
-        UpdateCursors(win->GetChildren(), display);
+        win->GTKUpdateCursor();
+        if (display && *display == NULL && win->m_widget)
+            *display = gtk_widget_get_display(win->m_widget);

     }
 }
 
     }
 }
 


@@ -394,8 +341,7 @@ void wxEndBusyCursor()
 
     g_globalCursor = gs_savedCursor;
     gs_savedCursor = wxNullCursor;
 
     g_globalCursor = gs_savedCursor;
     gs_savedCursor = wxNullCursor;

-    GdkDisplay* unused = NULL;
-    UpdateCursors(wxTopLevelWindows, unused);
+    UpdateCursors(NULL);

 }
 
 void wxBeginBusyCursor(const wxCursor* cursor)
 }
 
 void wxBeginBusyCursor(const wxCursor* cursor)


@@ -403,13 +349,13 @@ void wxBeginBusyCursor(const wxCursor* cursor)
     if (gs_busyCount++ > 0)
         return;
 
     if (gs_busyCount++ > 0)
         return;
 

-    wxASSERT_MSG( !gs_savedCursor.Ok(),
+    wxASSERT_MSG( !gs_savedCursor.IsOk(),

                   wxT("forgot to call wxEndBusyCursor, will leak memory") );
 
     gs_savedCursor = g_globalCursor;
     g_globalCursor = *cursor;
     GdkDisplay* display = NULL;
                   wxT("forgot to call wxEndBusyCursor, will leak memory") );
 
     gs_savedCursor = g_globalCursor;
     g_globalCursor = *cursor;
     GdkDisplay* display = NULL;

-    UpdateCursors(wxTopLevelWindows, display);
+    UpdateCursors(&display);

     if (display)
         gdk_display_flush(display);
 }
     if (display)
         gdk_display_flush(display);
 }


@@ -422,6 +368,5 @@ bool wxIsBusy()
 void wxSetCursor( const wxCursor& cursor )
 {
     g_globalCursor = cursor;
 void wxSetCursor( const wxCursor& cursor )
 {
     g_globalCursor = cursor;

-    GdkDisplay* unused = NULL;
-    UpdateCursors(wxTopLevelWindows, unused);
+    UpdateCursors(NULL);

 }
 }