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dolphin/Externals/wxWidgets3/src/gtk/cursor.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/cursor.cpp
// Purpose: wxCursor implementation
// Author: Robert Roebling
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// 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/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"
//-----------------------------------------------------------------------------
// wxCursorRefData
//-----------------------------------------------------------------------------
class wxCursorRefData: public wxGDIRefData
{
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()
{
m_cursor = NULL;
}
wxCursorRefData::~wxCursorRefData()
{
if (m_cursor)
{
#ifdef __WXGTK3__
g_object_unref(m_cursor);
#else
gdk_cursor_unref(m_cursor);
#endif
}
}
//-----------------------------------------------------------------------------
// 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)
{
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;
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_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()
{
}
void wxCursor::InitFromStock( wxStockCursor cursorId )
{
m_refData = new wxCursorRefData();
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 };
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;
#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_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
void wxCursor::InitFromImage( const wxImage & image )
{
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)
{
guchar r = 0, g = 0, b = 0;
if (hasMask)
{
r = image.GetMaskRed();
g = image.GetMaskGreen();
b = image.GetMaskBlue();
}
GdkPixbuf* pixbuf0 = pixbuf;
pixbuf = gdk_pixbuf_add_alpha(pixbuf, hasMask, r, g, b);
g_object_unref(pixbuf0);
if (alpha)
{
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;
}
}
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
GdkCursor *wxCursor::GetCursor() const
{
return M_CURSORDATA->m_cursor;
}
wxGDIRefData *wxCursor::CreateGDIRefData() const
{
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
//-----------------------------------------------------------------------------
/* 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;
const wxCursor &wxBusyCursor::GetStoredCursor()
{
return gs_savedCursor;
}
const wxCursor wxBusyCursor::GetBusyCursor()
{
return wxCursor(wxCURSOR_WATCH);
}
static void UpdateCursors(GdkDisplay** display)
{
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 wxEndBusyCursor()
{
if (--gs_busyCount > 0)
return;
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);
}
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