// Purpose:
// Author: Robert Roebling
// RCS-ID: $Id$
-// Copyright: (c) 1998 Robert Roebling, Markus Holzem, Chris Breeze
+// Copyright: (c) 1998 Robert Roebling, Chris Breeze
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/image.h"
#include "wx/module.h"
#include "wx/log.h"
+#include "wx/fontutil.h"
#include "wx/gtk/win_gtk.h"
bool m_used;
};
-static wxGC wxGCPool[GC_POOL_SIZE];
+#define GC_POOL_ALLOC_SIZE 100
+
+static int wxGCPoolSize = 0;
+
+static wxGC *wxGCPool = NULL;
static void wxInitGCPool()
{
- memset( wxGCPool, 0, GC_POOL_SIZE*sizeof(wxGC) );
+ // This really could wait until the first call to
+ // wxGetPoolGC, but we will make the first allocation
+ // now when other initialization is being performed.
+
+ // Set initial pool size.
+ wxGCPoolSize = GC_POOL_ALLOC_SIZE;
+
+ // Allocate initial pool.
+ wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
+ if (wxGCPool == NULL)
+ {
+ // If we cannot malloc, then fail with error
+ // when debug is enabled. If debug is not enabled,
+ // the problem will eventually get caught
+ // in wxGetPoolGC.
+ wxFAIL_MSG( wxT("Cannot allocate GC pool") );
+ return;
+ }
+
+ // Zero initial pool.
+ memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
}
static void wxCleanUpGCPool()
{
- for (int i = 0; i < GC_POOL_SIZE; i++)
+ for (int i = 0; i < wxGCPoolSize; i++)
{
if (wxGCPool[i].m_gc)
gdk_gc_unref( wxGCPool[i].m_gc );
}
+
+ free(wxGCPool);
+ wxGCPool = NULL;
+ wxGCPoolSize = 0;
}
static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
{
- for (int i = 0; i < GC_POOL_SIZE; i++)
+ wxGC *pptr;
+
+ // Look for an available GC.
+ for (int i = 0; i < wxGCPoolSize; i++)
{
if (!wxGCPool[i].m_gc)
{
}
}
+ // We did not find an available GC.
+ // We need to grow the GC pool.
+ pptr = (wxGC *)realloc(wxGCPool,
+ (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
+ if (pptr != NULL)
+ {
+ // Initialize newly allocated pool.
+ wxGCPool = pptr;
+ memset(&wxGCPool[wxGCPoolSize], 0,
+ GC_POOL_ALLOC_SIZE*sizeof(wxGC));
+
+ // Initialize entry we will return.
+ wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
+ gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
+ wxGCPool[wxGCPoolSize].m_type = type;
+ wxGCPool[wxGCPoolSize].m_used = TRUE;
+
+ // Set new value of pool size.
+ wxGCPoolSize += GC_POOL_ALLOC_SIZE;
+
+ // Return newly allocated entry.
+ return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
+ }
+
+ // The realloc failed. Fall through to error.
wxFAIL_MSG( wxT("No GC available") );
return (GdkGC*) NULL;
static void wxFreePoolGC( GdkGC *gc )
{
- for (int i = 0; i < GC_POOL_SIZE; i++)
+ for (int i = 0; i < wxGCPoolSize; i++)
{
if (wxGCPool[i].m_gc == gc)
{
m_owner = (wxWindow *)NULL;
#ifdef __WXGTK20__
m_context = (PangoContext *)NULL;
+ m_layout = (PangoLayout *)NULL;
m_fontdesc = (PangoFontDescription *)NULL;
#endif
}
GtkWidget *widget = window->m_wxwindow;
- // some controls don't have m_wxwindow - like wxStaticBox, but the user
+ // Some controls don't have m_wxwindow - like wxStaticBox, but the user
// code should still be able to create wxClientDCs for them, so we will
- // use the parent window here then
+ // use the parent window here then.
if ( !widget )
{
window = window->GetParent();
wxASSERT_MSG( widget, wxT("DC needs a widget") );
#ifdef __WXGTK20__
- m_context = gtk_widget_get_pango_context( widget );
- m_fontdesc = widget->style->font_desc;
+ m_context = window->GtkGetPangoDefaultContext();
+ m_layout = pango_layout_new( m_context );
+ m_fontdesc = pango_font_description_copy( widget->style->font_desc );
#endif
GtkPizza *pizza = GTK_PIZZA( widget );
m_window = pizza->bin_window;
- /* not realized ? */
+ // Window not realized ?
if (!m_window)
{
- /* don't report problems */
+ // Don't report problems as per MSW.
m_ok = TRUE;
return;
wxWindowDC::~wxWindowDC()
{
Destroy();
+
+#ifdef __WXGTK20__
+ if (m_layout)
+ g_object_unref( G_OBJECT( m_layout ) );
+ if (m_fontdesc)
+ pango_font_description_free( m_fontdesc );
+#endif
}
void wxWindowDC::SetUpDC()
m_owner->GetSize(width, height);
}
-void wxWindowDC::DoFloodFill( wxCoord x, wxCoord y,
- const wxColour & col, int style )
-{
- if (GetBrush().GetStyle() == wxTRANSPARENT)
- {
- wxLogDebug(wxT("In FloodFill, current Brush is transparent, no filling done"));
- return ;
- }
- int height = 0;
- int width = 0;
- this->GetSize(&width, &height);
- //it would be nice to fail if we don't get a sensible size...
- if (width < 1 || height < 1)
- {
- wxLogError(wxT("In FloodFill, dc.GetSize routine failed, method not supported by this DC"));
- return ;
- }
-
- //this is much faster than doing the individual pixels
- wxMemoryDC memdc;
- wxBitmap bitmap(width, height);
- memdc.SelectObject(bitmap);
- memdc.Blit(0, 0, width, height, (wxDC*) this, 0, 0);
- memdc.SelectObject(wxNullBitmap);
+extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
+ const wxColour & col, int style);
- wxImage image(bitmap);
- image.DoFloodFill (x,y, GetBrush(), col, style, GetLogicalFunction());
- bitmap = wxBitmap(image);
- memdc.SelectObject(bitmap);
- this->Blit(0, 0, width, height, &memdc, 0, 0);
- memdc.SelectObject(wxNullBitmap);
+bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
+ const wxColour& col, int style)
+{
+ return wxDoFloodFill(this, x, y, col, style);
}
bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
if (m_pen.GetStyle() == wxTRANSPARENT) return;
if (n <= 0) return;
- CalcBoundingBox( points[0].x + xoffset, points[0].y + yoffset );
+ GdkPoint *gpts = new GdkPoint[n];
+ if (! gpts)
+ {
+ wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
+ return;
+ }
- for (int i = 0; i < n-1; i++)
+ for (int i = 0; i < n; i++)
{
wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
- wxCoord x2 = XLOG2DEV(points[i+1].x + xoffset);
- wxCoord y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste
- wxCoord y2 = YLOG2DEV(points[i+1].y + yoffset);
+ wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
- if (m_window)
- gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 );
+ CalcBoundingBox( x1 + xoffset, y1 + yoffset );
- CalcBoundingBox( points[i+1].x + xoffset, points[i+1].y + yoffset );
+ gpts[i].x = x1;
+ gpts[i].y = y1;
}
+
+ if (m_window)
+ gdk_draw_lines( m_window, m_penGC, gpts, n);
+
+ delete[] gpts;
}
void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
wxCHECK_RET( Ok(), wxT("invalid window dc") );
if (!m_window) return;
+
+ if (text.empty()) return;
+#ifndef __WXGTK20__
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
-
-#if defined(__WXGTK20__)
- wxCHECK_RET( m_context, wxT("no Pango context") );
#endif
x = XLOG2DEV(x);
y = YLOG2DEV(y);
-#if defined(__WXGTK20__) && wxUSE_WCHAR_T
- // TODO: the layout engine should be abstracted at a higher level!
- PangoLayout *layout = pango_layout_new(m_context);
- pango_layout_set_font_description(layout, m_fontdesc);
+#ifdef __WXGTK20__
+ wxCHECK_RET( m_context, wxT("no Pango context") );
+ wxCHECK_RET( m_layout, wxT("no Pango layout") );
+ wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
+
+#if wxUSE_UNICODE
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
+#else
+ const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
+#endif
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+
+ if (m_scaleY != 1.0)
+ {
+ // If there is a user or actually any scale applied to
+ // the device context, scale the font.
+
+ // scale font description
+ gint oldSize = pango_font_description_get_size( m_fontdesc );
+ double size = oldSize;
+ size = size * m_scaleY;
+ pango_font_description_set_size( m_fontdesc, (gint)size );
+
+ // actually apply scaled font
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+
+ // Draw layout.
+ gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
+
+ // reset unscaled size
+ pango_font_description_set_size( m_fontdesc, oldSize );
+
+ // actually apply unscaled font
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+ }
+ else
{
- const wxWX2MBbuf data = text.mb_str(wxConvUTF8);
- pango_layout_set_text(layout, data, strlen(data));
+ // Draw layout.
+ gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
}
- PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
- PangoRectangle rect;
- pango_layout_line_get_extents(line, NULL, &rect);
- wxCoord width = rect.width;
- wxCoord height = rect.height;
- gdk_draw_layout( m_window, m_textGC, x, y, layout );
+
+#if 0
+ // Measure layout
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+#else
+ int w = 10;
+ int h = 10;
+#endif
+
+ wxCoord width = w;
+ wxCoord height = h;
+
#else // GTK+ 1.x
wxCoord width = gdk_string_width( font, text.mbc_str() );
wxCoord height = font->ascent + font->descent;
gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
}
gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
-#endif // GTK+ 2.0/1.x
/* CMB 17/7/98: simple underline: ignores scaling and underlying
X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
if (font->descent > 0) ul_y++;
gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
}
-
-#if defined(__WXGTK20__) && wxUSE_WCHAR_T
- g_object_unref( G_OBJECT( layout ) );
-#endif
+#endif // GTK+ 2.0/1.x
width = wxCoord(width / m_scaleX);
height = wxCoord(height / m_scaleY);
if (!m_window) return;
+#ifdef __WXGTK20__
+ // implement later without GdkFont for GTK 2.0
+ return;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
// don't use DrawPoint() because it uses the current pen
// colour, and we don't need it here
gdk_draw_point( m_window, m_textGC,
- XLOG2DEV(x + dstX), YLOG2DEV(y + dstY) );
+ XLOG2DEV(x) + dstX, YLOG2DEV(y) + dstY );
}
}
}
// update the bounding box
CalcBoundingBox(x + minX, y + minY);
CalcBoundingBox(x + maxX, y + maxY);
+#endif
}
void wxWindowDC::DoGetTextExtent(const wxString &string,
wxCoord *descent, wxCoord *externalLeading,
wxFont *theFont) const
{
+ if (string.IsEmpty())
+ {
+ if (width) (*width) = 0;
+ if (height) (*height) = 0;
+ return;
+ }
+
+#ifdef __WXGTK20__
+ // Set new font description
+ if (theFont)
+ pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
+
+ // Set layout's text
+#if wxUSE_UNICODE
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+#else
+ const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+#endif
+
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+
+ if (width) (*width) = (wxCoord) w;
+ if (height) (*height) = (wxCoord) h;
+ if (descent)
+ {
+ // Do something about metrics here. TODO.
+ (*descent) = 0;
+ }
+ if (externalLeading) (*externalLeading) = 0; // ??
+
+ // Reset old font description
+ if (theFont)
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+#else
wxFont fontToUse = m_font;
if (theFont) fontToUse = *theFont;
-
+
GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
if (descent) (*descent) = wxCoord(font->descent / m_scaleY);
if (externalLeading) (*externalLeading) = 0; // ??
+#endif
}
wxCoord wxWindowDC::GetCharWidth() const
{
+#ifdef __WXGTK20__
+ pango_layout_set_text( m_layout, "H", 1 );
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+ return w;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_MSG( font, -1, wxT("invalid font") );
return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
+#endif
}
wxCoord wxWindowDC::GetCharHeight() const
{
+#ifdef __WXGTK20__
+ pango_layout_set_text( m_layout, "H", 1 );
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+ return h;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_MSG( font, -1, wxT("invalid font") );
return wxCoord((font->ascent + font->descent) / m_scaleY);
+#endif
}
void wxWindowDC::Clear()
if (!m_window) return;
+ // VZ: the code below results in infinite recursion and crashes when
+ // dc.Clear() is done from OnPaint() so I disable it for now.
+ // I don't know what the correct fix is but Clear() surely should not
+ // reenter OnPaint()!
+#if 0
/* - we either are a memory dc or have a window as the
owner. anything else shouldn't happen.
- we don't use gdk_window_clear() as we don't set
if (m_owner)
{
- int width,height;
- m_owner->GetSize( &width, &height );
- gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
+ m_owner->Clear();
return;
}
gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
return;
}
+#else // 1
+ int width,height;
+ GetSize( &width, &height );
+ gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
+#endif // 0/1
}
void wxWindowDC::SetFont( const wxFont &font )
{
- wxCHECK_RET( font.Ok(), _T("invalid font in wxWindowDC::SetFont") );
-
m_font = font;
+
#ifdef __WXGTK20__
- // fix fontdesc?
+ if (m_font.Ok())
+ {
+ if (m_fontdesc)
+ pango_font_description_free( m_fontdesc );
+
+ m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
+
+
+ if (m_owner)
+ {
+ PangoContext *oldContext = m_context;
+
+ // We might want to use the X11 context for faster
+ // rendering on screen
+ if (m_font.GetNoAntiAliasing())
+ m_context = m_owner->GtkGetPangoX11Context();
+ else
+ m_context = m_owner->GtkGetPangoDefaultContext();
+
+ // If we switch back/forth between different contexts
+ // we also have to create a new layout. I think so,
+ // at least, and it doesn't hurt to do it.
+ if (oldContext != m_context)
+ {
+ if (m_layout)
+ g_object_unref( G_OBJECT( m_layout ) );
+
+ m_layout = pango_layout_new( m_context );
+ }
+ }
+
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+ }
#endif
}
gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
}
}
-#endif
+#endif // GTK+ > 1.0
GdkCapStyle capStyle = GDK_CAP_ROUND;
switch (m_pen.GetCap())
if (!m_window)
return;
- GdkFunction mode = GDK_COPY;
+ GdkFunction mode;
switch (function)
{
case wxXOR: mode = GDK_XOR; break;
case wxINVERT: mode = GDK_INVERT; break;
-#if (GTK_MINOR_VERSION > 0)
+#if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
case wxCLEAR: mode = GDK_CLEAR; break;
// unsupported by GTK
case wxNOR: mode = GDK_COPY; break;
-#endif
+#endif // GTK+ > 1.0
default:
- {
wxFAIL_MSG( wxT("unsupported logical function") );
- break;
- }
+ mode = GDK_COPY;
}
m_logicalFunction = function;
projects / wxWidgets.git / blobdiff