/////////////////////////////////////////////////////////////////////////////
-// Name: cursor.cpp
-// Purpose:
+// Name: src/gtk/cursor.cpp
+// Purpose: wxCursor implementation
// 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"
+#ifndef WX_PRECOMP
+ #include "wx/window.h"
+ #include "wx/app.h"
+ #include "wx/image.h"
+ #include "wx/bitmap.h"
+ #include "wx/log.h"
+#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 wxObjectRefData
+class wxCursorRefData: public wxGDIRefData
{
- public:
-
- wxCursorRefData(void);
- ~wxCursorRefData(void);
-
+public:
+ wxCursorRefData();
+ virtual ~wxCursorRefData();
+
+ 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(void)
+wxCursorRefData::wxCursorRefData()
{
- m_cursor = NULL;
-};
+ m_cursor = NULL;
+}
-wxCursorRefData::~wxCursorRefData(void)
+wxCursorRefData::~wxCursorRefData()
{
- if (m_cursor) gdk_cursor_destroy( m_cursor );
-};
+ if (m_cursor) gdk_cursor_unref( m_cursor );
+}
+
//-----------------------------------------------------------------------------
+// wxCursor
+//-----------------------------------------------------------------------------
+
+#define M_CURSORDATA static_cast<wxCursorRefData*>(m_refData)
-#define M_CURSORDATA ((wxCursorRefData *)m_refData)
+IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject)
-IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
+// used in the following two ctors
+extern GtkWidget *wxGetRootWindow();
-wxCursor::wxCursor(void)
+
+wxCursor::wxCursor()
{
-};
+}
-wxCursor::wxCursor( const 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 );
-
-/*
- 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
-*/
-
-};
+#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);
-wxCursor::wxCursor( const wxCursor &cursor )
+ InitFromImage(img);
+}
+
+wxCursor::wxCursor(const wxImage& img)
{
- Ref( cursor );
-};
+ InitFromImage(img);
+}
+#endif
-wxCursor::wxCursor( const wxCursor *cursor )
+wxCursor::wxCursor(const char bits[], int width, int height,
+ int hotSpotX, int hotSpotY,
+ const char maskBits[], const wxColour *fg, const wxColour *bg)
{
- UnRef();
- if (cursor) Ref( *cursor );
-};
+ 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 );
-wxCursor::~wxCursor(void)
+ g_object_unref (data);
+ g_object_unref (mask);
+}
+
+wxCursor::~wxCursor()
{
-};
+}
-wxCursor& wxCursor::operator = ( const wxCursor& cursor )
+void wxCursor::InitFromStock( wxStockCursor cursorId )
{
- if (*this == cursor) return (*this);
- Ref( cursor );
- return *this;
-};
+ m_refData = new wxCursorRefData();
+
+ GdkCursorType gdk_cur = GDK_LEFT_PTR;
+ switch (cursorId)
+ {
+ case wxCURSOR_BLANK:
+ {
+ const char bits[] = { 0 };
+ const 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);
+ g_object_unref(pixmap);
+ }
+ 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_HAND2; 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;
+/*
+ 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;
+*/
-bool wxCursor::operator == ( const wxCursor& cursor )
+ default:
+ wxFAIL_MSG(wxT("unsupported cursor type"));
+ // will use the standard one
+ break;
+ }
+
+ M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
+}
+
+#if wxUSE_IMAGE
+
+static void GetHotSpot(const wxImage& image, int& x, int& y)
{
- return m_refData == cursor.m_refData;
-};
+ 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;
-bool wxCursor::operator != ( const wxCursor& cursor )
+ if (x < 0 || x >= image.GetWidth())
+ x = 0;
+ if (y < 0 || y >= image.GetHeight())
+ y = 0;
+}
+
+void wxCursor::InitFromImage( const wxImage & image )
{
- return m_refData != cursor.m_refData;
-};
+ 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(gtk_widget_get_window(wxGetRootWindow()));
+ 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
+ );
+ }
+ else // no colour cursor support
+ {
+ 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;
+ }
+
+ // 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++)
+ {
+ for (int i = 0; i < w; i++, data += 3)
+ {
+ // 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) )
+ {
+ 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) );
+
+ 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
+ );
+ }
+}
+
+#endif // wxUSE_IMAGE
-bool wxCursor::Ok(void) const
+GdkCursor *wxCursor::GetCursor() const
{
- return TRUE;
-};
+ return M_CURSORDATA->m_cursor;
+}
-GdkCursor *wxCursor::GetCursor(void) const
+wxGDIRefData *wxCursor::CreateGDIRefData() const
{
- return M_CURSORDATA->m_cursor;
-};
+ return new wxCursorRefData;
+}
+
+wxGDIRefData *
+wxCursor::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const
+{
+ // 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;
+}
//-----------------------------------------------------------------------------
// busy cursor routines
//-----------------------------------------------------------------------------
-bool g_isBusy = FALSE;
+/* Current cursor, in order to hang on to
+ * cursor handle when setting the cursor globally */
+wxCursor g_globalCursor;
-void wxEndBusyCursor(void)
+static wxCursor gs_savedCursor;
+static int gs_busyCount = 0;
+
+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)
+static void UpdateCursors(GdkDisplay** display)
{
- return g_isBusy;
-};
+ wxWindowList::const_iterator i = wxTopLevelWindows.begin();
+ for (size_t n = wxTopLevelWindows.size(); n--; ++i)
+ {
+ wxWindow* win = *i;
+ win->GTKUpdateCursor();
+ if (display && *display == NULL && win->m_widget)
+ *display = gtk_widget_get_display(win->m_widget);
+ }
+}
-void wxSetCursor( const wxCursor& cursor )
+void wxEndBusyCursor()
{
- extern wxCursor *g_globalCursor;
- if (g_globalCursor) (*g_globalCursor) = cursor;
+ if (--gs_busyCount > 0)
+ return;
- if (cursor.Ok()) {};
-};
+ g_globalCursor = gs_savedCursor;
+ gs_savedCursor = wxNullCursor;
+ UpdateCursors(NULL);
+}
+
+void wxBeginBusyCursor(const wxCursor* cursor)
+{
+ if (gs_busyCount++ > 0)
+ return;
+
+ wxASSERT_MSG( !gs_savedCursor.IsOk(),
+ wxT("forgot to call wxEndBusyCursor, will leak memory") );
+ gs_savedCursor = g_globalCursor;
+ g_globalCursor = *cursor;
+ GdkDisplay* display = NULL;
+ UpdateCursors(&display);
+ if (display)
+ gdk_display_flush(display);
+}
+bool wxIsBusy()
+{
+ return gs_busyCount > 0;
+}
+
+void wxSetCursor( const wxCursor& cursor )
+{
+ g_globalCursor = cursor;
+ UpdateCursors(NULL);
+}
projects / wxWidgets.git / blobdiff