X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8bbe427f8e5a2078b266e282453595b5a634d35c..726cc8697cd44a41b43257f05ca8cdd42b71a711:/src/gtk/cursor.cpp diff --git a/src/gtk/cursor.cpp b/src/gtk/cursor.cpp index 73babdfb05..73983f1351 100644 --- a/src/gtk/cursor.cpp +++ b/src/gtk/cursor.cpp @@ -1,166 +1,447 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: cursor.cpp -// Purpose: +// Name: src/gtk/cursor.cpp +// Purpose: wxCursor implementation // Author: Robert Roebling // 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 +#include "wx/gtk/private/object.h" +#include "wx/gtk/private/gtk2-compat.h" + //----------------------------------------------------------------------------- -// wxCursor +// wxCursorRefData //----------------------------------------------------------------------------- -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; + +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_destroy( m_cursor ); + if (m_cursor) gdk_cursor_unref( m_cursor ); } + +//----------------------------------------------------------------------------- +// wxCursor //----------------------------------------------------------------------------- -#define M_CURSORDATA ((wxCursorRefData *)m_refData) +#define M_CURSORDATA static_cast(m_refData) + +IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject) + +// used in the following two ctors +extern GtkWidget *wxGetRootWindow(); -IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject) wxCursor::wxCursor() { } -wxCursor::wxCursor( int cursorId ) +#if wxUSE_IMAGE +wxCursor::wxCursor(const wxString& cursor_file, + wxBitmapType type, + int hotSpotX, int hotSpotY) { - 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; - } + wxImage img; + if (!img.LoadFile(cursor_file, type)) + return; - M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur ); + // 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); -/* - 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 -*/ + InitFromImage(img); +} +wxCursor::wxCursor(const wxImage& img) +{ + 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) { - 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(bits), width, height); + GdkBitmap* mask = gdk_bitmap_create_from_data( + gtk_widget_get_window(wxGetRootWindow()), const_cast(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() { } -wxCursor& wxCursor::operator = ( const wxCursor& cursor ) +void wxCursor::InitFromStock( wxStockCursor cursorId ) +{ + 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; +*/ + + 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) { - if (*this == cursor) return (*this); - Ref( cursor ); - return *this; + 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; } -bool wxCursor::operator == ( const wxCursor& cursor ) const +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 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 + ); + } } -bool wxCursor::operator != ( const wxCursor& cursor ) const +#endif // wxUSE_IMAGE + +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 * WXUNUSED(data)) const { - return M_CURSORDATA->m_cursor; + // 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() +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() +static void UpdateCursors(const wxWindowList& list, GdkDisplay*& display) { - return g_isBusy; + wxWindowList::const_iterator i = list.begin(); + for (size_t n = list.size(); n--; ++i) + { + wxWindow* win = *i; + if (display == NULL && win->m_widget) + { + GdkWindow* w = gtk_widget_get_window(win->m_widget); + if (w) + display = gdk_drawable_get_display(w); + } + win->GTKUpdateCursor(true, false); + UpdateCursors(win->GetChildren(), display); + } } -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; + GdkDisplay* unused = NULL; + UpdateCursors(wxTopLevelWindows, unused); } +void wxBeginBusyCursor(const wxCursor* cursor) +{ + if (gs_busyCount++ > 0) + return; + + wxASSERT_MSG( !gs_savedCursor.Ok(), + wxT("forgot to call wxEndBusyCursor, will leak memory") ); + + gs_savedCursor = g_globalCursor; + g_globalCursor = *cursor; + GdkDisplay* display = NULL; + UpdateCursors(wxTopLevelWindows, display); + if (display) + gdk_display_flush(display); +} +bool wxIsBusy() +{ + return gs_busyCount > 0; +} + +void wxSetCursor( const wxCursor& cursor ) +{ + g_globalCursor = cursor; + GdkDisplay* unused = NULL; + UpdateCursors(wxTopLevelWindows, unused); +}