/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/cursor.cpp
-// Purpose:
+// Purpose: wxCursor implementation
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
#endif // WX_PRECOMP
#include <gtk/gtk.h>
+#include "wx/gtk/private/object.h"
+#include "wx/gtk/private/gtk2-compat.h"
//-----------------------------------------------------------------------------
-// wxCursor
+// wxCursorRefData
//-----------------------------------------------------------------------------
class wxCursorRefData: public wxGDIRefData
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()
{
- m_cursor = (GdkCursor *) NULL;
+ m_cursor = NULL;
}
wxCursorRefData::~wxCursorRefData()
if (m_cursor) gdk_cursor_unref( m_cursor );
}
+
+//-----------------------------------------------------------------------------
+// wxCursor
//-----------------------------------------------------------------------------
#define M_CURSORDATA static_cast<wxCursorRefData*>(m_refData)
IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject)
+// used in the following two ctors
+extern GtkWidget *wxGetRootWindow();
+
+
wxCursor::wxCursor()
{
}
+#if wxUSE_IMAGE
+wxCursor::wxCursor(const wxString& cursor_file,
+ wxBitmapType type,
+ int hotSpotX, int hotSpotY)
+{
+ wxImage img;
+ if (!img.LoadFile(cursor_file, type))
+ return;
+
+ // eventually set the hotspot:
+ if (!img.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
+ img.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, hotSpotX);
+ if (!img.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
+ img.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, hotSpotY);
+
+ InitFromImage(img);
+}
+
+wxCursor::wxCursor(const wxImage& img)
+{
+ InitFromImage(img);
+}
+#endif
+
+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(
+ 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);
+}
+
+wxCursor::~wxCursor()
+{
+}
+
void wxCursor::InitFromStock( wxStockCursor cursorId )
{
m_refData = new wxCursorRefData();
M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
}
-
-// used in the following two ctors
-extern GtkWidget *wxGetRootWindow();
-
-wxCursor::wxCursor(const wxString& cursor_file,
- wxBitmapType type,
- int hotSpotX, int hotSpotY)
-{
- /* TODO: test this code! */
-
- // Must be an XBM file
- if (type != wxBITMAP_TYPE_XPM) {
- wxLogError("Invalid cursor bitmap type '%d'", type);
- return;
- }
-
- // load the XPM
- GdkBitmap *mask = NULL;
- GdkBitmap *data = gdk_pixmap_create_from_xpm( wxGetRootWindow()->window,
- &mask, NULL, cursor_file.mb_str() );
- if (!data)
- return;
-
- // check given hotspot
- gint w, h;
- gdk_drawable_get_size( data, &w, &h );
- if (hotSpotX < 0 || hotSpotX >= w)
- hotSpotX = 0;
- if (hotSpotY < 0 || hotSpotY >= h)
- hotSpotY = 0;
-
- // create the real cursor
- m_refData = new wxCursorRefData;
- M_CURSORDATA->m_cursor =
- gdk_cursor_new_from_pixmap( data, mask,
- wxBLACK->GetColor(), wxWHITE->GetColor(),
- hotSpotX, hotSpotY );
-
- g_object_unref (data);
- g_object_unref (mask);
-}
-
-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 );
-
- g_object_unref (data);
- g_object_unref (mask);
-}
-
#if wxUSE_IMAGE
static void GetHotSpot(const wxImage& image, int& x, int& y)
y = 0;
}
-wxCursor::wxCursor( const wxImage & image )
+void wxCursor::InitFromImage( const wxImage & image )
{
int w = image.GetWidth() ;
int h = image.GetHeight();
m_refData = new wxCursorRefData;
wxImage image_copy(image);
- GdkDisplay* display = gdk_drawable_get_display(wxGetRootWindow()->window);
+ GdkDisplay* display = gdk_drawable_get_display(gtk_widget_get_window(wxGetRootWindow()));
if (gdk_display_supports_cursor_color(display))
{
if (!image.HasAlpha())
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
+ else // no colour cursor support
{
- 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;
- }
+ unsigned long keyMaskColor = 0;
+ GdkPixmap *maskRaw;
+ if (bHasMask)
+ {
+ keyMaskColor = wxImageHistogram::MakeKey(
+ image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
+ // get mask before image is modified
+ wxBitmap bitmap(image, 1);
+ maskRaw = bitmap.GetMask()->GetBitmap();
+ g_object_ref(maskRaw);
+ }
+ else
+ {
+ const int size = ((w + 7) / 8) * h;
+ char* bits = new char[size];
+ memset(bits, 0xff, size);
+ maskRaw = gdk_bitmap_create_from_data(
+ gtk_widget_get_window(wxGetRootWindow()), 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++)
- {
- for (i = 0; i < w; i++, data += 3)
+ // assign the raw pointer to wxGtkObject to ensure it is unref'd later
+ wxGtkObject<GdkPixmap> mask(maskRaw);
+
+ // modify image so wxBitmap can be used to convert to pixmap
+ image_copy.SetMask(false);
+ wxByte* data = image_copy.GetData();
+ for (int j = 0; j < h; j++)
{
- //if average value is > mid grey
- if (int(data[0]) + data[1] + data[2] >= 3 * 128)
+ for (int i = 0; i < w; i++, data += 3)
{
- // wxBitmap only converts (255,255,255) to white
- data[0] = 255;
- data[1] = 255;
- data[2] = 255;
+ // if average value of the pixel is > mid grey, convert it to
+ // background (0), otherwise to foreground (255, using wxBitmap
+ // convention)
+ data[0] =
+ data[1] =
+ data[2] = int(data[0]) + data[1] + data[2] >= 3 * 128 ? 0 : 255;
}
}
- }
- 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) )
+ 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 value = entry->second.value;
- if (value > nMost)
- {
- nNext = nMost;
- colNextMostFreq = colMostFreq;
- nMost = value;
- colMostFreq = key;
- }
- else if (value > nNext)
+ unsigned long key = entry->first;
+ if ( !bHasMask || (key != keyMaskColor) )
{
- nNext = value;
- colNextMostFreq = key;
+ 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;
+ }
}
}
- }
-
- 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) );
+ wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
+ (unsigned char)(colMostFreq >> 8),
+ (unsigned char)(colMostFreq) );
- int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
- int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
+ wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
+ (unsigned char)(colNextMostFreq >> 8),
+ (unsigned char)(colNextMostFreq) );
- if (bg_intensity > fg_intensity)
- {
- //swap fg and bg
- wxColour tmp = fg;
- fg = bg;
- bg = tmp;
- }
+ int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
+ int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
- M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
- (
- bitmap.GetPixmap(),
- mask,
- fg.GetColor(), bg.GetColor(),
- hotSpotX, hotSpotY
- );
+ if (bg_intensity > fg_intensity)
+ {
+ //swap fg and bg
+ wxColour tmp = fg;
+ fg = bg;
+ bg = tmp;
+ }
- g_object_unref (mask);
+ M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
+ (
+ bitmap.GetPixmap(),
+ mask,
+ fg.GetColor(), bg.GetColor(),
+ hotSpotX, hotSpotY
+ );
+ }
}
#endif // wxUSE_IMAGE
-wxCursor::~wxCursor()
-{
-}
-
GdkCursor *wxCursor::GetCursor() const
{
return M_CURSORDATA->m_cursor;
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;
}
//-----------------------------------------------------------------------------
return wxCursor(wxCURSOR_WATCH);
}
-static void InternalIdle(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;
- if (display == NULL && win->m_widget && win->m_widget->window)
- display = gdk_drawable_get_display(win->m_widget->window);
- win->OnInternalIdle();
- InternalIdle(win->GetChildren(), display);
+ win->GTKUpdateCursor();
+ if (display && *display == NULL && win->m_widget)
+ *display = gtk_widget_get_display(win->m_widget);
}
}
g_globalCursor = gs_savedCursor;
gs_savedCursor = wxNullCursor;
- GdkDisplay* unused = NULL;
- InternalIdle(wxTopLevelWindows, unused);
+ UpdateCursors(NULL);
}
void wxBeginBusyCursor(const wxCursor* cursor)
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;
- InternalIdle(wxTopLevelWindows, display);
+ UpdateCursors(&display);
if (display)
gdk_display_flush(display);
}
void wxSetCursor( const wxCursor& cursor )
{
g_globalCursor = cursor;
- wxTheApp->WakeUpIdle();
+ UpdateCursors(NULL);
}
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