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463c1fa1a916b1a262023601f3913fb12c4bcc8f
wxWidgets/src/gtk/dcclient.cpp
Robert Roebling 463c1fa1a9 wxWindow::ReParent() 
wxDC::SetClippingRegio( region)
  lots if wxDC inline with wxPoint


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1104 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-12-03 15:14:45 +00:00

1252 lines
35 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: dcclient.cpp
// Purpose:
// Author: Robert Roebling
// RCS-ID: $Id$
// Copyright: (c) 1998 Robert Roebling, Markus Holzem, Chris Breeze
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "dcclient.h"
#endif
#include "wx/dcclient.h"
#include "wx/dcmemory.h"
#include <math.h>
//-----------------------------------------------------------------------------
// local data
//-----------------------------------------------------------------------------
#include "bdiag.xbm"
#include "fdiag.xbm"
#include "cdiag.xbm"
#include "horiz.xbm"
#include "verti.xbm"
#include "cross.xbm"
#define num_hatches 6
static GdkPixmap *hatches[num_hatches];
static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
#define RAD2DEG 57.2957795131
//-----------------------------------------------------------------------------
// temporary implementation of the missing GDK function
//-----------------------------------------------------------------------------
#include "gdk/gdkprivate.h"
void gdk_draw_bitmap (GdkDrawable *drawable,
GdkGC *gc,
GdkDrawable *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkWindowPrivate *drawable_private;
GdkWindowPrivate *src_private;
GdkGCPrivate *gc_private;
g_return_if_fail (drawable != NULL);
g_return_if_fail (src != NULL);
g_return_if_fail (gc != NULL);
drawable_private = (GdkWindowPrivate*) drawable;
src_private = (GdkWindowPrivate*) src;
if (drawable_private->destroyed || src_private->destroyed)
return;
gc_private = (GdkGCPrivate*) gc;
if (width == -1) width = src_private->width;
if (height == -1) height = src_private->height;
XCopyPlane( drawable_private->xdisplay,
src_private->xwindow,
drawable_private->xwindow,
gc_private->xgc,
xsrc, ysrc,
width, height,
xdest, ydest,
1 );
}
//-----------------------------------------------------------------------------
// wxWindowDC
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxWindowDC,wxDC)
wxWindowDC::wxWindowDC(void)
{
m_penGC = (GdkGC *) NULL;
m_brushGC = (GdkGC *) NULL;
m_textGC = (GdkGC *) NULL;
m_bgGC = (GdkGC *) NULL;
m_cmap = (GdkColormap *) NULL;
m_isMemDC = FALSE;
}
wxWindowDC::wxWindowDC( wxWindow *window )
{
m_penGC = (GdkGC *) NULL;
m_brushGC = (GdkGC *) NULL;
m_textGC = (GdkGC *) NULL;
m_bgGC = (GdkGC *) NULL;
m_cmap = (GdkColormap *) NULL;
if (!window) return;
GtkWidget *widget = window->m_wxwindow;
if (!widget) return;
m_window = widget->window;
if (!m_window) return;
if (window->m_wxwindow)
m_cmap = gtk_widget_get_colormap( window->m_wxwindow );
else
m_cmap = gtk_widget_get_colormap( window->m_widget );
m_isMemDC = FALSE;
SetUpDC();
}
wxWindowDC::~wxWindowDC(void)
{
Destroy();
}
void wxWindowDC::FloodFill( long WXUNUSED(x), long WXUNUSED(y),
const wxColour &WXUNUSED(col), int WXUNUSED(style) )
{
wxFAIL_MSG( "wxWindowDC::FloodFill not implemented" );
}
bool wxWindowDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
{
wxFAIL_MSG( "wxWindowDC::GetPixel not implemented" );
return FALSE;
}
void wxWindowDC::DrawLine( long x1, long y1, long x2, long y2 )
{
if (!Ok()) return;
if (m_pen.GetStyle() != wxTRANSPARENT)
{
gdk_draw_line( m_window, m_penGC,
XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
}
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
}
void wxWindowDC::CrossHair( long x, long y )
{
if (!Ok()) return;
if (m_pen.GetStyle() != wxTRANSPARENT)
{
int w = 0;
int h = 0;
GetSize( &w, &h );
long xx = XLOG2DEV(x);
long yy = YLOG2DEV(y);
gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
}
}
void wxWindowDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double yc )
{
if (!Ok()) return;
long xx1 = XLOG2DEV(x1);
long yy1 = YLOG2DEV(y1);
long xx2 = XLOG2DEV(x2);
long yy2 = YLOG2DEV(y2);
long xxc = XLOG2DEV((long)xc);
long yyc = YLOG2DEV((long)yc);
double dx = xx1 - xxc;
double dy = yy1 - yyc;
double radius = sqrt(dx*dx+dy*dy);
long r = (long)radius;
double radius1, radius2;
if (xx1 == xx2 && yy1 == yy2)
{
radius1 = 0.0;
radius2 = 360.0;
}
else
if (radius == 0.0)
{
radius1 = radius2 = 0.0;
}
else
{
radius1 = (xx1 - xxc == 0) ?
(yy1 - yyc < 0) ? 90.0 : -90.0 :
-atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
radius2 = (xx2 - xxc == 0) ?
(yy2 - yyc < 0) ? 90.0 : -90.0 :
-atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
}
long alpha1 = long(radius1 * 64.0);
long alpha2 = long((radius2 - radius1) * 64.0);
while (alpha2 <= 0) alpha2 += 360*64;
while (alpha1 > 360*64) alpha1 -= 360*64;
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
if (m_pen.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
CalcBoundingBox (x1, y1);
CalcBoundingBox (x2, y2);
}
void wxWindowDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
{
if (!Ok()) return;
long xx = XLOG2DEV(x);
long yy = YLOG2DEV(y);
long ww = m_signX * XLOG2DEVREL(width);
long hh = m_signY * YLOG2DEVREL(height);
// CMB: handle -ve width and/or height
if (ww < 0) { ww = -ww; xx = xx - ww; }
if (hh < 0) { hh = -hh; yy = yy - hh; }
long start = long(sa * 64.0);
long end = long(ea * 64.0);
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
if (m_pen.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
CalcBoundingBox (x, y);
CalcBoundingBox (x + width, y + height);
}
void wxWindowDC::DrawPoint( long x, long y )
{
if (!Ok()) return;
if (m_pen.GetStyle() != wxTRANSPARENT)
gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
CalcBoundingBox (x, y);
}
void wxWindowDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
{
if (!Ok()) return;
if (m_pen.GetStyle() == wxTRANSPARENT) return;
if (n <= 0) return;
CalcBoundingBox( points[0].x + xoffset, points[0].y + yoffset );
for (int i = 0; i < n-1; i++)
{
long x1 = XLOG2DEV(points[i].x + xoffset);
long x2 = XLOG2DEV(points[i+1].x + xoffset);
long y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste
long y2 = YLOG2DEV(points[i+1].y + yoffset);
gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 );
CalcBoundingBox( points[i+1].x + xoffset, points[i+1].y + yoffset );
}
}
void wxWindowDC::DrawLines( wxList *points, long xoffset, long yoffset )
{
if (!Ok()) return;
if (m_pen.GetStyle() == wxTRANSPARENT) return;
wxNode *node = points->First();
if (!node) return;
wxPoint *pt = (wxPoint*)node->Data();
CalcBoundingBox( pt->x + xoffset, pt->y + yoffset );
while (node->Next())
{
wxPoint *point = (wxPoint*)node->Data();
wxPoint *npoint = (wxPoint*)node->Next()->Data();
long x1 = XLOG2DEV(point->x + xoffset);
long x2 = XLOG2DEV(npoint->x + xoffset);
long y1 = YLOG2DEV(point->y + yoffset); // and a waste again...
long y2 = YLOG2DEV(npoint->y + yoffset);
gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 );
node = node->Next();
CalcBoundingBox( npoint->x + xoffset, npoint->y + yoffset );
}
}
void wxWindowDC::DrawPolygon( int n, wxPoint points[], long xoffset, long yoffset, int WXUNUSED(fillStyle) )
{
if (!Ok()) return;
if (!n) return;
GdkPoint *gdkpoints = new GdkPoint[n+1];
int i;
for (i = 0 ; i < n ; i++)
{
gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
}
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_polygon (m_window, m_brushGC, TRUE, gdkpoints, n);
// To do: Fillstyle
if (m_pen.GetStyle() != wxTRANSPARENT)
for (i = 0 ; i < n ; i++)
{
gdk_draw_line( m_window, m_penGC,
gdkpoints[i%n].x,
gdkpoints[i%n].y,
gdkpoints[(i+1)%n].x,
gdkpoints[(i+1)%n].y);
}
delete[] gdkpoints;
}
void wxWindowDC::DrawPolygon( wxList *lines, long xoffset, long yoffset, int WXUNUSED(fillStyle))
{
if (!Ok()) return;
int n = lines->Number();
if (!n) return;
GdkPoint *gdkpoints = new GdkPoint[n];
wxNode *node = lines->First();
int cnt = 0;
while (node)
{
wxPoint *p = (wxPoint *) node->Data();
gdkpoints[cnt].x = XLOG2DEV(p->x + xoffset);
gdkpoints[cnt].y = YLOG2DEV(p->y + yoffset);
node = node->Next();
cnt++;
CalcBoundingBox( p->x + xoffset, p->y + yoffset );
}
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_polygon (m_window, m_brushGC, TRUE, gdkpoints, n);
// To do: Fillstyle
if (m_pen.GetStyle() != wxTRANSPARENT)
{
int i;
for (i = 0 ; i < n ; i++)
{
gdk_draw_line( m_window, m_penGC,
gdkpoints[i%n].x,
gdkpoints[i%n].y,
gdkpoints[(i+1)%n].x,
gdkpoints[(i+1)%n].y );
}
}
delete[] gdkpoints;
}
void wxWindowDC::DrawRectangle( long x, long y, long width, long height )
{
if (!Ok()) return;
long xx = XLOG2DEV(x);
long yy = YLOG2DEV(y);
long ww = m_signX * XLOG2DEVREL(width);
long hh = m_signY * YLOG2DEVREL(height);
// CMB: draw nothing if transformed w or h is 0
if (ww == 0 || hh == 0) return;
// CMB: handle -ve width and/or height
if (ww < 0) { ww = -ww; xx = xx - ww; }
if (hh < 0) { hh = -hh; yy = yy - hh; }
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
if (m_pen.GetStyle() != wxTRANSPARENT)
gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
CalcBoundingBox( x, y );
CalcBoundingBox( x + width, y + height );
}
void wxWindowDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius )
{
if (!Ok()) return;
if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
long xx = XLOG2DEV(x);
long yy = YLOG2DEV(y);
long ww = m_signX * XLOG2DEVREL(width);
long hh = m_signY * YLOG2DEVREL(height);
long rr = XLOG2DEVREL((long)radius);
// CMB: handle -ve width and/or height
if (ww < 0) { ww = -ww; xx = xx - ww; }
if (hh < 0) { hh = -hh; yy = yy - hh; }
// CMB: if radius is zero use DrawRectangle() instead to avoid
// X drawing errors with small radii
if (rr == 0)
{
DrawRectangle( x, y, width, height );
return;
}
// CMB: draw nothing if transformed w or h is 0
if (ww == 0 || hh == 0) return;
// CMB: adjust size if outline is drawn otherwise the result is
// 1 pixel too wide and high
if (m_pen.GetStyle() != wxTRANSPARENT)
{
ww--;
hh--;
}
// CMB: ensure dd is not larger than rectangle otherwise we
// get an hour glass shape
long dd = 2 * rr;
if (dd > ww) dd = ww;
if (dd > hh) dd = hh;
rr = dd / 2;
if (m_brush.GetStyle() != wxTRANSPARENT)
{
gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
}
if (m_pen.GetStyle() != wxTRANSPARENT)
{
gdk_draw_line( m_window, m_penGC, xx+rr, yy, xx+ww-rr, yy );
gdk_draw_line( m_window, m_penGC, xx+rr, yy+hh, xx+ww-rr, yy+hh );
gdk_draw_line( m_window, m_penGC, xx, yy+rr, xx, yy+hh-rr );
gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr, xx+ww, yy+hh-rr );
gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
}
// this ignores the radius
CalcBoundingBox( x, y );
CalcBoundingBox( x + width, y + height );
}
void wxWindowDC::DrawEllipse( long x, long y, long width, long height )
{
if (!Ok()) return;
long xx = XLOG2DEV(x);
long yy = YLOG2DEV(y);
long ww = m_signX * XLOG2DEVREL(width);
long hh = m_signY * YLOG2DEVREL(height);
// CMB: handle -ve width and/or height
if (ww < 0) { ww = -ww; xx = xx - ww; }
if (hh < 0) { hh = -hh; yy = yy - hh; }
if (m_brush.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
if (m_pen.GetStyle() != wxTRANSPARENT)
gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
CalcBoundingBox( x, y );
CalcBoundingBox( x + width, y + height );
}
bool wxWindowDC::CanDrawBitmap(void) const
{
return TRUE;
}
void wxWindowDC::DrawIcon( const wxIcon &icon, long x, long y )
{
if (!Ok()) return;
if (!icon.Ok()) return;
int xx = XLOG2DEV(x);
int yy = YLOG2DEV(y);
GdkBitmap *mask = (GdkBitmap *) NULL;
if (icon.GetMask()) mask = icon.GetMask()->GetBitmap();
if (mask)
{
gdk_gc_set_clip_mask( m_penGC, mask );
gdk_gc_set_clip_origin( m_penGC, xx, yy );
}
GdkPixmap *pm = icon.GetPixmap();
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
if (mask)
{
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
}
CalcBoundingBox( x, y );
int width = icon.GetWidth();
int height = icon.GetHeight();
CalcBoundingBox( x + width, y + height );
}
void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMask )
{
if (!Ok()) return;
if (!bitmap.Ok()) return;
int xx = XLOG2DEV(x);
int yy = YLOG2DEV(y);
GdkBitmap *mask = (GdkBitmap *) NULL;
if (bitmap.GetMask()) mask = bitmap.GetMask()->GetBitmap();
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_penGC, mask );
gdk_gc_set_clip_origin( m_penGC, xx, yy );
}
GdkPixmap *pm = bitmap.GetPixmap();
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
}
CalcBoundingBox( x, y );
int width = bitmap.GetWidth();
int height = bitmap.GetHeight();
CalcBoundingBox( x + width, y + height );
}
bool wxWindowDC::Blit( long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool useMask )
{
if (!Ok()) return FALSE;
CalcBoundingBox( xdest, ydest );
CalcBoundingBox( xdest + width, ydest + height );
wxClientDC *csrc = (wxClientDC*)source;
if (csrc->m_isMemDC)
{
wxMemoryDC* srcDC = (wxMemoryDC*)source;
GdkPixmap* pmap = srcDC->m_selected.GetPixmap();
if (pmap)
{
long xx = XLOG2DEV(xdest);
long yy = YLOG2DEV(ydest);
GdkBitmap *mask = (GdkBitmap *) NULL;
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_textGC, mask );
gdk_gc_set_clip_origin( m_textGC, xx, yy );
}
gdk_draw_pixmap( m_window, m_textGC, pmap,
source->DeviceToLogicalX(xsrc),
source->DeviceToLogicalY(ysrc),
xx,
yy,
source->DeviceToLogicalXRel(width),
source->DeviceToLogicalYRel(height) );
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
gdk_gc_set_clip_origin( m_textGC, 0, 0 );
}
return TRUE;
}
GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
if (bmap)
{
long xx = XLOG2DEV(xdest);
long yy = YLOG2DEV(ydest);
GdkBitmap *mask = (GdkBitmap *) NULL;
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_textGC, mask );
gdk_gc_set_clip_origin( m_textGC, xx, yy );
}
gdk_draw_bitmap( m_window, m_textGC, bmap,
source->DeviceToLogicalX(xsrc),
source->DeviceToLogicalY(ysrc),
xx,
yy,
source->DeviceToLogicalXRel(width),
source->DeviceToLogicalYRel(height) );
if (useMask && mask)
{
gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
gdk_gc_set_clip_origin( m_textGC, 0, 0 );
}
return TRUE;
}
}
gdk_window_copy_area ( m_window, m_textGC,
XLOG2DEV(xdest), YLOG2DEV(ydest),
csrc->GetWindow(),
source->DeviceToLogicalX(xsrc),
source->DeviceToLogicalY(ysrc),
source->DeviceToLogicalXRel(width),
source->DeviceToLogicalYRel(height) );
/*
gdk_window_copy_area ( m_window, m_textGC,
XLOG2DEV(xdest), YLOG2DEV(ydest),
csrc->GetWindow(),
xsrc, ysrc,
width, height );
*/
return TRUE;
}
void wxWindowDC::DrawText( const wxString &text, long x, long y, bool WXUNUSED(use16) )
{
if (!Ok()) return;
GdkFont *font = m_font.GetInternalFont( m_scaleY );
x = XLOG2DEV(x);
y = YLOG2DEV(y);
// CMB 21/5/98: draw text background if mode is wxSOLID
if (m_backgroundMode == wxSOLID)
{
long width = gdk_string_width( font, text );
long height = font->ascent + font->descent;
gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
}
gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text );
// CMB 17/7/98: simple underline: ignores scaling and underlying
// X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
// properties (see wxXt implementation)
if (m_font.GetUnderlined())
{
long width = gdk_string_width( font, text );
long ul_y = y + font->ascent;
if (font->descent > 0) ul_y++;
gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
}
long w, h;
GetTextExtent (text, &w, &h);
CalcBoundingBox (x + w, y + h);
CalcBoundingBox (x, y);
}
bool wxWindowDC::CanGetTextExtent(void) const
{
return TRUE;
}
void wxWindowDC::GetTextExtent( const wxString &string, long *width, long *height,
long *descent, long *externalLeading,
wxFont *theFont, bool WXUNUSED(use16) )
{
if (!Ok()) return;
wxFont fontToUse = m_font;
if (theFont) fontToUse = *theFont;
GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
if (width) (*width) = long(gdk_string_width( font, string ) / m_scaleX);
if (height) (*height) = long((font->ascent + font->descent) / m_scaleY);
if (descent) (*descent) = long(font->descent / m_scaleY);
if (externalLeading) (*externalLeading) = 0; // ??
}
long wxWindowDC::GetCharWidth(void)
{
if (!Ok()) return 0;
GdkFont *font = m_font.GetInternalFont( m_scaleY );
return long(gdk_string_width( font, "H" ) / m_scaleX);
}
long wxWindowDC::GetCharHeight(void)
{
if (!Ok()) return 0;
GdkFont *font = m_font.GetInternalFont( m_scaleY );
return long((font->ascent + font->descent) / m_scaleY);
}
void wxWindowDC::Clear(void)
{
if (!Ok()) return;
if (!m_isMemDC)
{
gdk_window_clear( m_window );
}
else
{
int width,height;
GetSize( &width, &height );
gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
}
}
void wxWindowDC::SetFont( const wxFont &font )
{
if (!Ok()) return;
m_font = font;
}
void wxWindowDC::SetPen( const wxPen &pen )
{
if (!Ok()) return;
if (m_pen == pen) return;
m_pen = pen;
if (!m_pen.Ok()) return;
gint width = m_pen.GetWidth();
// CMB: if width is non-zero scale it with the dc
if (width <= 0)
{
width = 1;
}
else
{
// X doesn't allow different width in x and y and so we take
// the average
double w = 0.5 + (abs(XLOG2DEVREL(width)) + abs(YLOG2DEVREL(width))) / 2.0;
width = (int)w;
}
GdkLineStyle lineStyle = GDK_LINE_SOLID;
switch (m_pen.GetStyle())
{
case wxSOLID: { lineStyle = GDK_LINE_SOLID; break; }
case wxDOT: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }
case wxLONG_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }
case wxSHORT_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }
case wxDOT_DASH: { lineStyle = GDK_LINE_DOUBLE_DASH; break; }
}
GdkCapStyle capStyle = GDK_CAP_ROUND;
switch (m_pen.GetCap())
{
case wxCAP_ROUND: { capStyle = (width <= 1) ? GDK_CAP_NOT_LAST : GDK_CAP_ROUND; break; }
case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
}
GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
switch (m_pen.GetJoin())
{
case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
case wxJOIN_ROUND: { joinStyle = GDK_JOIN_ROUND; break; }
case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
}
gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
m_pen.GetColour().CalcPixel( m_cmap );
gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
}
void wxWindowDC::SetBrush( const wxBrush &brush )
{
if (!Ok()) return;
if (m_brush == brush) return;
m_brush = brush;
if (!m_brush.Ok()) return;
m_brush.GetColour().CalcPixel( m_cmap );
gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
GdkFill fillStyle = GDK_SOLID;
switch (m_brush.GetStyle())
{
case wxSOLID:
case wxTRANSPARENT:
break;
default:
fillStyle = GDK_STIPPLED;
}
gdk_gc_set_fill( m_brushGC, fillStyle );
if (m_brush.GetStyle() == wxSTIPPLE)
{
gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
}
if (IS_HATCH(m_brush.GetStyle()))
{
int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
gdk_gc_set_stipple( m_brushGC, hatches[num] );
}
}
// CMB 21/7/98: Added SetBackground. Sets background brush
// for Clear() and bg colour for shapes filled with cross-hatch brush
void wxWindowDC::SetBackground( const wxBrush &brush )
{
if (!Ok()) return;
if (m_backgroundBrush == brush) return;
m_backgroundBrush = brush;
if (!m_backgroundBrush.Ok()) return;
m_backgroundBrush.GetColour().CalcPixel( m_cmap );
gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
GdkFill fillStyle = GDK_SOLID;
switch (m_backgroundBrush.GetStyle())
{
case wxSOLID:
case wxTRANSPARENT:
break;
default:
fillStyle = GDK_STIPPLED;
}
gdk_gc_set_fill( m_bgGC, fillStyle );
if (m_backgroundBrush.GetStyle() == wxSTIPPLE)
{
gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
}
if (IS_HATCH(m_backgroundBrush.GetStyle()))
{
int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
gdk_gc_set_stipple( m_bgGC, hatches[num] );
}
}
void wxWindowDC::SetLogicalFunction( int function )
{
if (m_logicalFunction == function) return;
GdkFunction mode = GDK_COPY;
switch (function)
{
case wxXOR: mode = GDK_INVERT; break;
case wxINVERT: mode = GDK_INVERT; break;
default: break;
}
m_logicalFunction = function;
gdk_gc_set_function( m_penGC, mode );
gdk_gc_set_function( m_brushGC, mode );
gdk_gc_set_function( m_textGC, mode );
}
void wxWindowDC::SetTextForeground( const wxColour &col )
{
if (!Ok()) return;
if (m_textForegroundColour == col) return;
m_textForegroundColour = col;
if (!m_textForegroundColour.Ok()) return;
m_textForegroundColour.CalcPixel( m_cmap );
gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
}
void wxWindowDC::SetTextBackground( const wxColour &col )
{
if (!Ok()) return;
if (m_textBackgroundColour == col) return;
m_textBackgroundColour = col;
if (!m_textBackgroundColour.Ok()) return;
m_textBackgroundColour.CalcPixel( m_cmap );
gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
}
void wxWindowDC::SetBackgroundMode( int mode )
{
m_backgroundMode = mode;
// CMB 21/7/98: fill style of cross-hatch brushes is affected by
// transparent/solid background mode
if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
{
gdk_gc_set_fill( m_brushGC,
(m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
}
}
void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
{
}
void wxWindowDC::SetClippingRegion( long x, long y, long width, long height )
{
wxDC::SetClippingRegion( x, y, width, height );
GdkRectangle rect;
rect.x = XLOG2DEV(x);
rect.y = YLOG2DEV(y);
rect.width = XLOG2DEVREL(width);
rect.height = YLOG2DEVREL(height);
gdk_gc_set_clip_rectangle( m_penGC, &rect );
gdk_gc_set_clip_rectangle( m_brushGC, &rect );
gdk_gc_set_clip_rectangle( m_textGC, &rect );
gdk_gc_set_clip_rectangle( m_bgGC, &rect );
}
void wxWindowDC::SetClippingRegion( const wxRegion &region )
{
if (region.Empty())
{
DestroyClippingRegion();
return;
}
gdk_gc_set_clip_region( m_penGC, region.GetRegion() );
gdk_gc_set_clip_region( m_brushGC, region.GetRegion() );
gdk_gc_set_clip_region( m_textGC, region.GetRegion() );
gdk_gc_set_clip_region( m_bgGC, region.GetRegion() );
}
void wxWindowDC::DestroyClippingRegion(void)
{
wxDC::DestroyClippingRegion();
gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
}
void wxWindowDC::SetUpDC(void)
{
Destroy();
m_ok = TRUE;
m_logicalFunction = wxCOPY;
m_penGC = gdk_gc_new( m_window );
m_brushGC = gdk_gc_new( m_window );
m_textGC = gdk_gc_new( m_window );
m_bgGC = gdk_gc_new( m_window );
wxColour tmp_col( m_textForegroundColour );
m_textForegroundColour = wxNullColour;
SetTextForeground( tmp_col );
tmp_col = m_textBackgroundColour;
m_textBackgroundColour = wxNullColour;
SetTextBackground( tmp_col );
wxPen tmp_pen( m_pen );
m_pen = wxNullPen;
SetPen( tmp_pen );
wxFont tmp_font( m_font );
m_font = wxNullFont;
SetFont( tmp_font );
wxBrush tmp_brush( m_brush );
m_brush = wxNullBrush;
SetBrush( tmp_brush );
tmp_brush = m_backgroundBrush;
m_backgroundBrush = wxNullBrush;
SetBackground( tmp_brush );
if (!hatch_bitmap)
{
hatch_bitmap = hatches;
hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
}
}
void wxWindowDC::Destroy(void)
{
if (m_penGC) gdk_gc_unref( m_penGC );
m_penGC = (GdkGC*) NULL;
if (m_brushGC) gdk_gc_unref( m_brushGC );
m_brushGC = (GdkGC*) NULL;
if (m_textGC) gdk_gc_unref( m_textGC );
m_textGC = (GdkGC*) NULL;
if (m_bgGC) gdk_gc_unref( m_bgGC );
m_bgGC = (GdkGC*) NULL;
}
GdkWindow *wxWindowDC::GetWindow(void)
{
return m_window;
}
// ----------------------------------- spline code ----------------------------------------
void wx_quadratic_spline(double a1, double b1, double a2, double b2,
double a3, double b3, double a4, double b4);
void wx_clear_stack(void);
int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
double *y3, double *x4, double *y4);
void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
double x4, double y4);
static bool wx_spline_add_point(double x, double y);
static void wx_spline_draw_point_array(wxDC *dc);
wxList wx_spline_point_list;
#define half(z1, z2) ((z1+z2)/2.0)
#define THRESHOLD 5
/* iterative version */
void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
double b4)
{
register double xmid, ymid;
double x1, y1, x2, y2, x3, y3, x4, y4;
wx_clear_stack();
wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
xmid = (double)half(x2, x3);
ymid = (double)half(y2, y3);
if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
wx_spline_add_point( x1, y1 );
wx_spline_add_point( xmid, ymid );
} else {
wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
(double)half(x3, x4), (double)half(y3, y4), x4, y4);
wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
(double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
}
}
}
/* utilities used by spline drawing routines */
typedef struct wx_spline_stack_struct {
double x1, y1, x2, y2, x3, y3, x4, y4;
} Stack;
#define SPLINE_STACK_DEPTH 20
static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
static Stack *wx_stack_top;
static int wx_stack_count;
void wx_clear_stack(void)
{
wx_stack_top = wx_spline_stack;
wx_stack_count = 0;
}
void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
{
wx_stack_top->x1 = x1;
wx_stack_top->y1 = y1;
wx_stack_top->x2 = x2;
wx_stack_top->y2 = y2;
wx_stack_top->x3 = x3;
wx_stack_top->y3 = y3;
wx_stack_top->x4 = x4;
wx_stack_top->y4 = y4;
wx_stack_top++;
wx_stack_count++;
}
int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
double *x3, double *y3, double *x4, double *y4)
{
if (wx_stack_count == 0)
return (0);
wx_stack_top--;
wx_stack_count--;
*x1 = wx_stack_top->x1;
*y1 = wx_stack_top->y1;
*x2 = wx_stack_top->x2;
*y2 = wx_stack_top->y2;
*x3 = wx_stack_top->x3;
*y3 = wx_stack_top->y3;
*x4 = wx_stack_top->x4;
*y4 = wx_stack_top->y4;
return (1);
}
static bool wx_spline_add_point(double x, double y)
{
wxPoint *point = new wxPoint ;
point->x = (int) x;
point->y = (int) y;
wx_spline_point_list.Append((wxObject*)point);
return TRUE;
}
static void wx_spline_draw_point_array(wxDC *dc)
{
dc->DrawLines(&wx_spline_point_list, 0, 0 );
wxNode *node = wx_spline_point_list.First();
while (node)
{
wxPoint *point = (wxPoint *)node->Data();
delete point;
delete node;
node = wx_spline_point_list.First();
}
}
void wxWindowDC::DrawSpline( wxList *points )
{
wxPoint *p;
double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
double x1, y1, x2, y2;
wxNode *node = points->First();
p = (wxPoint *)node->Data();
x1 = p->x;
y1 = p->y;
node = node->Next();
p = (wxPoint *)node->Data();
x2 = p->x;
y2 = p->y;
cx1 = (double)((x1 + x2) / 2);
cy1 = (double)((y1 + y2) / 2);
cx2 = (double)((cx1 + x2) / 2);
cy2 = (double)((cy1 + y2) / 2);
wx_spline_add_point(x1, y1);
while ((node = node->Next()) != NULL)
{
p = (wxPoint *)node->Data();
x1 = x2;
y1 = y2;
x2 = p->x;
y2 = p->y;
cx4 = (double)(x1 + x2) / 2;
cy4 = (double)(y1 + y2) / 2;
cx3 = (double)(x1 + cx4) / 2;
cy3 = (double)(y1 + cy4) / 2;
wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
cx1 = cx4;
cy1 = cy4;
cx2 = (double)(cx1 + x2) / 2;
cy2 = (double)(cy1 + y2) / 2;
}
wx_spline_add_point( cx1, cy1 );
wx_spline_add_point( x2, y2 );
wx_spline_draw_point_array( this );
}
//-----------------------------------------------------------------------------
// wxPaintDC
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxWindowDC)
wxPaintDC::wxPaintDC(void)
: wxWindowDC()
{
}
wxPaintDC::wxPaintDC( wxWindow *win )
: wxWindowDC( win )
{
}
//-----------------------------------------------------------------------------
// wxClientDC
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxClientDC,wxWindowDC)
wxClientDC::wxClientDC(void)
: wxWindowDC()
{
}
wxClientDC::wxClientDC( wxWindow *win )
: wxWindowDC( win )
{
}
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