/////////////////////////////////////////////////////////////////////////////
-// Name: dc.cpp
+// Name: src/gtk/dc.cpp
// Purpose:
// Author: Robert Roebling
// RCS-ID: $Id$
-// Copyright: (c) 1998 Robert Roebling, Markus Holzem
+// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
-#ifdef __GNUG__
- #pragma implementation "dc.h"
-#endif
-
-#include "wx/dc.h"
+#ifdef __WXGTK3__
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include "wx/window.h"
+#include "wx/dcclient.h"
+#include "wx/dcmemory.h"
+#include "wx/dcscreen.h"
+#include "wx/icon.h"
+#include "wx/gtk/dc.h"
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
+#include <gtk/gtk.h>
-#define mm2inches 0.0393700787402
-#define inches2mm 25.4
-#define mm2twips 56.6929133859
-#define twips2mm 0.0176388888889
-#define mm2pt 2.83464566929
-#define pt2mm 0.352777777778
+wxGTKCairoDCImpl::wxGTKCairoDCImpl(wxDC* owner)
+ : base_type(owner)
+{
+ m_width = 0;
+ m_height = 0;
+}
-//-----------------------------------------------------------------------------
-// wxDC
-//-----------------------------------------------------------------------------
+wxGTKCairoDCImpl::wxGTKCairoDCImpl(wxDC* owner, int)
+ : base_type(owner, 0)
+{
+ m_width = 0;
+ m_height = 0;
+}
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
+wxGTKCairoDCImpl::wxGTKCairoDCImpl(wxDC* owner, wxWindow* window)
+ : base_type(owner, 0)
+{
+ m_window = window;
+ m_font = window->GetFont();
+ m_textForegroundColour = window->GetForegroundColour();
+ m_textBackgroundColour = window->GetBackgroundColour();
+ m_width = 0;
+ m_height = 0;
+}
-wxDC::wxDC()
+void wxGTKCairoDCImpl::DoDrawBitmap(const wxBitmap& bitmap, int x, int y, bool useMask)
{
- m_ok = FALSE;
+ wxCHECK_RET(IsOk(), "invalid DC");
- m_mm_to_pix_x = 1.0;
- m_mm_to_pix_y = 1.0;
+ cairo_t* cr = NULL;
+ if (m_graphicContext)
+ cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
+ if (cr)
+ {
+ cairo_save(cr);
+ bitmap.Draw(cr, x, y, useMask, &m_textForegroundColour, &m_textBackgroundColour);
+ cairo_restore(cr);
+ }
+}
- m_needComputeScaleX = FALSE; /* not used yet */
- m_needComputeScaleY = FALSE; /* not used yet */
+void wxGTKCairoDCImpl::DoDrawIcon(const wxIcon& icon, int x, int y)
+{
+ DoDrawBitmap(icon, x, y, true);
+}
- m_logicalFunction = wxCOPY;
+#if wxUSE_IMAGE
+bool wxDoFloodFill(wxDC* dc, int x, int y, const wxColour& col, wxFloodFillStyle style);
- m_pen = *wxBLACK_PEN;
- m_font = *wxNORMAL_FONT;
- m_brush = *wxTRANSPARENT_BRUSH;
+bool wxGTKCairoDCImpl::DoFloodFill(int x, int y, const wxColour& col, wxFloodFillStyle style)
+{
+ return wxDoFloodFill(GetOwner(), x, y, col, style);
}
+#endif
-void wxDC::DoSetClippingRegion( long x, long y, long width, long height )
+wxBitmap wxGTKCairoDCImpl::DoGetAsBitmap(const wxRect* /*subrect*/) const
{
- m_clipping = TRUE;
- m_clipX1 = x;
- m_clipY1 = y;
- m_clipX2 = x + width;
- m_clipY2 = y + height;
+ wxFAIL_MSG("DoGetAsBitmap not implemented");
+ return wxBitmap();
}
-void wxDC::DestroyClippingRegion()
+bool wxGTKCairoDCImpl::DoGetPixel(int x, int y, wxColour* col) const
{
- m_clipping = FALSE;
+ if (col)
+ {
+ cairo_t* cr = NULL;
+ if (m_graphicContext)
+ cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
+ if (cr)
+ {
+ cairo_surface_t* surface = cairo_get_target(cr);
+ x = LogicalToDeviceX(x);
+ y = LogicalToDeviceY(y);
+ GdkPixbuf* pixbuf = gdk_pixbuf_get_from_surface(surface, x, y, 1, 1);
+ if (pixbuf)
+ {
+ const guchar* src = gdk_pixbuf_get_pixels(pixbuf);
+ col->Set(src[0], src[1], src[2]);
+ g_object_unref(pixbuf);
+ return true;
+ }
+ *col = wxColour();
+ }
+ }
+ return false;
}
-// ---------------------------------------------------------------------------
-// get DC capabilities
-// ---------------------------------------------------------------------------
-
-void wxDC::DoGetSize( int* width, int* height ) const
+void wxGTKCairoDCImpl::DoGetSize(int* width, int* height) const
{
- if (width) *width = m_maxX-m_minX;
- if (height) *height = m_maxY-m_minY;
+ if (width)
+ *width = m_width;
+ if (height)
+ *height = m_height;
}
-void wxDC::DoGetSizeMM( int* width, int* height ) const
+bool wxGTKCairoDCImpl::DoStretchBlit(int xdest, int ydest, int dstWidth, int dstHeight, wxDC* source, int xsrc, int ysrc, int srcWidth, int srcHeight, wxRasterOperationMode rop, bool useMask, int xsrcMask, int ysrcMask)
{
- int w = 0;
- int h = 0;
- GetSize( &w, &h );
- if (width) *width = int( double(w) / (m_scaleX*m_mm_to_pix_x) );
- if (height) *height = int( double(h) / (m_scaleY*m_mm_to_pix_y) );
+ wxCHECK_MSG(IsOk(), false, "invalid DC");
+ wxCHECK_MSG(source && source->IsOk(), false, "invalid source DC");
+
+ cairo_t* cr = NULL;
+ if (m_graphicContext)
+ cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
+ cairo_t* cr_src = NULL;
+ wxGraphicsContext* gc_src = source->GetGraphicsContext();
+ if (gc_src)
+ cr_src = static_cast<cairo_t*>(gc_src->GetNativeContext());
+
+ if (cr == NULL || cr_src == NULL)
+ return false;
+
+ const int xsrc_dev = source->LogicalToDeviceX(xsrc);
+ const int ysrc_dev = source->LogicalToDeviceY(ysrc);
+
+ cairo_surface_t* surface = cairo_get_target(cr_src);
+ cairo_surface_flush(surface);
+ cairo_save(cr);
+ cairo_translate(cr, xdest, ydest);
+ cairo_rectangle(cr, 0, 0, dstWidth, dstHeight);
+ double sx, sy;
+ source->GetUserScale(&sx, &sy);
+ cairo_scale(cr, dstWidth / (sx * srcWidth), dstHeight / (sy * srcHeight));
+ cairo_set_source_surface(cr, surface, -xsrc_dev, -ysrc_dev);
+ const wxRasterOperationMode rop_save = m_logicalFunction;
+ SetLogicalFunction(rop);
+ cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
+ cairo_surface_t* maskSurf = NULL;
+ if (useMask)
+ {
+ const wxBitmap& bitmap = source->GetImpl()->GetSelectedBitmap();
+ if (bitmap.IsOk())
+ {
+ wxMask* mask = bitmap.GetMask();
+ if (mask)
+ maskSurf = *mask;
+ }
+ }
+ if (maskSurf)
+ {
+ int xsrcMask_dev = xsrc_dev;
+ int ysrcMask_dev = ysrc_dev;
+ if (xsrcMask != -1)
+ xsrcMask_dev = source->LogicalToDeviceX(xsrcMask);
+ if (ysrcMask != -1)
+ ysrcMask_dev = source->LogicalToDeviceY(ysrcMask);
+ cairo_clip(cr);
+ cairo_mask_surface(cr, maskSurf, -xsrcMask_dev, -ysrcMask_dev);
+ }
+ else
+ {
+ cairo_fill(cr);
+ }
+ cairo_restore(cr);
+ m_logicalFunction = rop_save;
+ return true;
}
-// Resolution in pixels per logical inch
-wxSize wxDC::GetPPI() const
+void* wxGTKCairoDCImpl::GetCairoContext() const
{
- // TODO (should probably be pure virtual)
- return wxSize(0, 0);
+ cairo_t* cr = NULL;
+ if (m_graphicContext)
+ cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
+ if (cr)
+ cairo_reference(cr);
+ return cr;
}
+//-----------------------------------------------------------------------------
-// ---------------------------------------------------------------------------
-// set various DC parameters
-// ---------------------------------------------------------------------------
-
-void wxDC::ComputeScaleAndOrigin()
+wxWindowDCImpl::wxWindowDCImpl(wxWindowDC* owner, wxWindow* window)
+ : base_type(owner, window)
{
- /* CMB: copy scale to see if it changes */
- double origScaleX = m_scaleX;
- double origScaleY = m_scaleY;
-
- m_scaleX = m_logicalScaleX * m_userScaleX;
- m_scaleY = m_logicalScaleY * m_userScaleY;
-
- /* CMB: if scale has changed call SetPen to recalulate the line width */
- if (m_scaleX != origScaleX || m_scaleY != origScaleY)
+ GtkWidget* widget = window->m_wxwindow;
+ if (widget == NULL)
+ widget = window->m_widget;
+ GdkWindow* gdkWindow = NULL;
+ if (widget)
{
- /* this is a bit artificial, but we need to force wxDC to think
- the pen has changed */
- wxPen pen = m_pen;
- m_pen = wxNullPen;
- SetPen( pen );
- }
+ gdkWindow = gtk_widget_get_window(widget);
+ m_ok = true;
+ }
+ if (gdkWindow)
+ {
+ cairo_t* cr = gdk_cairo_create(gdkWindow);
+ SetGraphicsContext(wxGraphicsContext::CreateFromNative(cr));
+ GtkAllocation a;
+ gtk_widget_get_allocation(widget, &a);
+ int x, y;
+ if (gtk_widget_get_has_window(widget))
+ {
+ m_width = gdk_window_get_width(gdkWindow);
+ m_height = gdk_window_get_height(gdkWindow);
+ x = m_width - a.width;
+ y = m_height - a.height;
+ }
+ else
+ {
+ m_width = a.width;
+ m_height = a.height;
+ x = a.x;
+ y = a.y;
+ cairo_rectangle(cr, a.x, a.y, a.width, a.height);
+ cairo_clip(cr);
+ }
+ if (x || y)
+ SetDeviceLocalOrigin(x, y);
+ }
+ else
+ SetGraphicsContext(wxGraphicsContext::Create());
}
+//-----------------------------------------------------------------------------
-void wxDC::SetMapMode( int mode )
+wxClientDCImpl::wxClientDCImpl(wxClientDC* owner, wxWindow* window)
+ : base_type(owner, window)
{
- switch (mode)
+ GtkWidget* widget = window->m_wxwindow;
+ if (widget == NULL)
+ widget = window->m_widget;
+ GdkWindow* gdkWindow = NULL;
+ if (widget)
{
- case wxMM_TWIPS:
- SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
- break;
- case wxMM_POINTS:
- SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
- break;
- case wxMM_METRIC:
- SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
- break;
- case wxMM_LOMETRIC:
- SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
- break;
- default:
- case wxMM_TEXT:
- SetLogicalScale( 1.0, 1.0 );
- break;
+ gdkWindow = gtk_widget_get_window(widget);
+ m_ok = true;
}
- m_mappingMode = mode;
-
-/* we don't do this mega optimisation
- if (mode != wxMM_TEXT)
+ if (gdkWindow)
{
- m_needComputeScaleX = TRUE;
- m_needComputeScaleY = TRUE;
+ cairo_t* cr = gdk_cairo_create(gdkWindow);
+ SetGraphicsContext(wxGraphicsContext::CreateFromNative(cr));
+ if (gtk_widget_get_has_window(widget))
+ {
+ m_width = gdk_window_get_width(gdkWindow);
+ m_height = gdk_window_get_height(gdkWindow);
+ }
+ else
+ {
+ GtkAllocation a;
+ gtk_widget_get_allocation(widget, &a);
+ m_width = a.width;
+ m_height = a.height;
+ cairo_rectangle(cr, a.x, a.y, a.width, a.height);
+ cairo_clip(cr);
+ SetDeviceLocalOrigin(a.x, a.y);
+ }
}
-*/
+ else
+ SetGraphicsContext(wxGraphicsContext::Create());
}
+//-----------------------------------------------------------------------------
-void wxDC::SetUserScale( double x, double y )
+wxPaintDCImpl::wxPaintDCImpl(wxPaintDC* owner, wxWindow* window)
+ : base_type(owner, window)
{
- // allow negative ? -> no
- m_userScaleX = x;
- m_userScaleY = y;
- ComputeScaleAndOrigin();
+ cairo_t* cr = window->GTKPaintContext();
+ wxCHECK_RET(cr, "using wxPaintDC without being in a native paint event");
+ GdkWindow* gdkWindow = gtk_widget_get_window(window->m_wxwindow);
+ m_width = gdk_window_get_width(gdkWindow);
+ m_height = gdk_window_get_height(gdkWindow);
+ cairo_reference(cr);
+ SetGraphicsContext(wxGraphicsContext::CreateFromNative(cr));
}
+//-----------------------------------------------------------------------------
-void wxDC::SetLogicalScale( double x, double y )
+wxScreenDCImpl::wxScreenDCImpl(wxScreenDC* owner)
+ : base_type(owner, 0)
{
- // allow negative ?
- m_logicalScaleX = x;
- m_logicalScaleY = y;
- ComputeScaleAndOrigin();
+ GdkWindow* window = gdk_get_default_root_window();
+ m_width = gdk_window_get_width(window);
+ m_height = gdk_window_get_height(window);
+ cairo_t* cr = gdk_cairo_create(window);
+ SetGraphicsContext(wxGraphicsContext::CreateFromNative(cr));
}
+//-----------------------------------------------------------------------------
-void wxDC::SetLogicalOrigin( long x, long y )
+wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC* owner)
+ : base_type(owner)
{
- m_logicalOriginX = x * m_signX; // is this still correct ?
- m_logicalOriginY = y * m_signY;
- ComputeScaleAndOrigin();
+ m_ok = false;
}
-void wxDC::SetDeviceOrigin( long x, long y )
+wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC* owner, wxBitmap& bitmap)
+ : base_type(owner, 0)
+ , m_bitmap(bitmap)
{
- // only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there
- m_deviceOriginX = x;
- m_deviceOriginY = y;
- ComputeScaleAndOrigin();
+ Setup();
}
-void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC* owner, wxDC*)
+ : base_type(owner)
{
- // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
- m_signX = (xLeftRight ? 1 : -1);
- m_signY = (yBottomUp ? -1 : 1);
- ComputeScaleAndOrigin();
+ m_ok = false;
}
-// ---------------------------------------------------------------------------
-// coordinates transformations
-// ---------------------------------------------------------------------------
+wxBitmap wxMemoryDCImpl::DoGetAsBitmap(const wxRect* subrect) const
+{
+ return subrect ? m_bitmap.GetSubBitmap(*subrect) : m_bitmap;
+}
-long wxDCBase::DeviceToLogicalX(long x) const
+void wxMemoryDCImpl::DoSelect(const wxBitmap& bitmap)
{
- return ((wxDC *)this)->XDEV2LOG(x);
+ m_bitmap = bitmap;
+ Setup();
}
-long wxDCBase::DeviceToLogicalY(long y) const
+const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const
{
- return ((wxDC *)this)->YDEV2LOG(y);
+ return m_bitmap;
}
-long wxDCBase::DeviceToLogicalXRel(long x) const
+wxBitmap& wxMemoryDCImpl::GetSelectedBitmap()
{
- return ((wxDC *)this)->XDEV2LOGREL(x);
+ return m_bitmap;
}
-long wxDCBase::DeviceToLogicalYRel(long y) const
+void wxMemoryDCImpl::Setup()
{
- return ((wxDC *)this)->YDEV2LOGREL(y);
+ wxGraphicsContext* gc = NULL;
+ m_ok = m_bitmap.IsOk();
+ if (m_ok)
+ {
+ m_width = m_bitmap.GetWidth();
+ m_height = m_bitmap.GetHeight();
+ cairo_t* cr = m_bitmap.CairoCreate();
+ gc = wxGraphicsContext::CreateFromNative(cr);
+ }
+ SetGraphicsContext(gc);
}
+//-----------------------------------------------------------------------------
-long wxDCBase::LogicalToDeviceX(long x) const
+wxGTKCairoDC::wxGTKCairoDC(cairo_t* cr)
+ : base_type(new wxGTKCairoDCImpl(this, 0))
{
- return ((wxDC *)this)->XLOG2DEV(x);
+ cairo_reference(cr);
+ SetGraphicsContext(wxGraphicsContext::CreateFromNative(cr));
}
-long wxDCBase::LogicalToDeviceY(long y) const
+#else
+
+#include "wx/gtk/dc.h"
+
+//-----------------------------------------------------------------------------
+// wxGTKDCImpl
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxGTKDCImpl, wxDCImpl)
+
+wxGTKDCImpl::wxGTKDCImpl( wxDC *owner )
+ : wxDCImpl( owner )
{
- return ((wxDC *)this)->YLOG2DEV(y);
+ m_ok = FALSE;
+
+ m_pen = *wxBLACK_PEN;
+ m_font = *wxNORMAL_FONT;
+ m_brush = *wxWHITE_BRUSH;
}
-long wxDCBase::LogicalToDeviceXRel(long x) const
+wxGTKDCImpl::~wxGTKDCImpl()
{
- return ((wxDC *)this)->XLOG2DEVREL(x);
}
-long wxDCBase::LogicalToDeviceYRel(long y) const
+void wxGTKDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
- return ((wxDC *)this)->YLOG2DEVREL(y);
+ m_clipping = TRUE;
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + width;
+ m_clipY2 = y + height;
}
+// ---------------------------------------------------------------------------
+// get DC capabilities
+// ---------------------------------------------------------------------------
+
+void wxGTKDCImpl::DoGetSizeMM( int* width, int* height ) const
+{
+ int w = 0;
+ int h = 0;
+ GetOwner()->GetSize( &w, &h );
+ if (width) *width = int( double(w) / (m_userScaleX*m_mm_to_pix_x) );
+ if (height) *height = int( double(h) / (m_userScaleY*m_mm_to_pix_y) );
+}
+
+// Resolution in pixels per logical inch
+wxSize wxGTKDCImpl::GetPPI() const
+{
+ // TODO (should probably be pure virtual)
+ return wxSize(0, 0);
+}
+#endif
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