// Author: Vadim Zeitlin
// Modified by:
// Created: 05/25/99
-// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef WX_PRECOMP
#include "wx/math.h"
#include "wx/module.h"
+ #include "wx/window.h"
#endif
+#include "wx/private/textmeasure.h"
+
#ifdef __WXMSW__
#include "wx/msw/dcclient.h"
#include "wx/msw/dcmemory.h"
#include "wx/msw/dcscreen.h"
#endif
-#ifdef __WXGTK20__
+#ifdef __WXGTK3__
+ #include "wx/gtk/dc.h"
+#elif defined __WXGTK20__
#include "wx/gtk/dcclient.h"
#include "wx/gtk/dcmemory.h"
#include "wx/gtk/dcscreen.h"
#include "wx/dfb/dcscreen.h"
#endif
-#ifdef __WXPALMOS__
- #include "wx/palmos/dcclient.h"
- #include "wx/palmos/dcmemory.h"
- #include "wx/palmos/dcscreen.h"
-#endif
-
//----------------------------------------------------------------------------
// wxDCFactory
//----------------------------------------------------------------------------
void wxMemoryDC::SelectObject(wxBitmap& bmp)
{
+ if ( bmp.IsSameAs(GetSelectedBitmap()) )
+ {
+ // Nothing to do, this bitmap is already selected.
+ return;
+ }
+
// make sure that the given wxBitmap is not sharing its data with other
// wxBitmap instances as its contents will be modified by any drawing
// operation done on this DC
, m_userScaleX(1.0), m_userScaleY(1.0)
, m_scaleX(1.0), m_scaleY(1.0)
, m_signX(1), m_signY(1)
+ , m_contentScaleFactor(1)
, m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
, m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0)
, m_logicalFunction(wxCOPY)
{
}
+// ----------------------------------------------------------------------------
+// clipping
+// ----------------------------------------------------------------------------
+
+void wxDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
+{
+ if ( m_clipping )
+ {
+ m_clipX1 = wxMax( m_clipX1, x );
+ m_clipY1 = wxMax( m_clipY1, y );
+ m_clipX2 = wxMin( m_clipX2, (x + w) );
+ m_clipY2 = wxMin( m_clipY2, (y + h) );
+ }
+ else
+ {
+ m_clipping = true;
+
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + w;
+ m_clipY2 = y + h;
+ }
+}
+
// ----------------------------------------------------------------------------
// coordinate conversions and transforms
// ----------------------------------------------------------------------------
ComputeScaleAndOrigin();
}
-
-// Each element of the widths array will be the width of the string up to and
-// including the corresponding character in text. This is the generic
-// implementation, the port-specific classes should do this with native APIs
-// if available and if faster. Note: pango_layout_index_to_pos is much slower
-// than calling GetTextExtent!!
-
-#define FWC_SIZE 256
-
-class FontWidthCache
-{
-public:
- FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
- ~FontWidthCache() { delete []m_widths; }
-
- void Reset()
- {
- if (!m_widths)
- m_widths = new int[FWC_SIZE];
-
- memset(m_widths, 0, sizeof(int)*FWC_SIZE);
- }
-
- wxFont m_font;
- double m_scaleX;
- int *m_widths;
-};
-
-static FontWidthCache s_fontWidthCache;
-
bool wxDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{
- int totalWidth = 0;
-
- const size_t len = text.length();
- widths.Empty();
- widths.Add(0, len);
-
- // reset the cache if font or horizontal scale have changed
- if ( !s_fontWidthCache.m_widths ||
- !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
- (s_fontWidthCache.m_font != GetFont()) )
- {
- s_fontWidthCache.Reset();
- s_fontWidthCache.m_font = GetFont();
- s_fontWidthCache.m_scaleX = m_scaleX;
- }
-
- // Calculate the position of each character based on the widths of
- // the previous characters
- int w, h;
- for ( size_t i = 0; i < len; i++ )
- {
- const wxChar c = text[i];
- unsigned int c_int = (unsigned int)c;
-
- if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
- {
- w = s_fontWidthCache.m_widths[c_int];
- }
- else
- {
- DoGetTextExtent(c, &w, &h);
- if (c_int < FWC_SIZE)
- s_fontWidthCache.m_widths[c_int] = w;
- }
-
- totalWidth += w;
- widths[i] = totalWidth;
- }
-
- return true;
+ wxTextMeasure tm(GetOwner(), &m_font);
+ return tm.GetPartialTextExtents(text, widths, m_scaleX);
}
void wxDCImpl::GetMultiLineTextExtent(const wxString& text,
wxCoord *h,
const wxFont *font) const
{
- wxCoord widthTextMax = 0, widthLine,
- heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
-
- wxString curLine;
- for ( wxString::const_iterator pc = text.begin(); ; ++pc )
- {
- if ( pc == text.end() || *pc == wxT('\n') )
- {
- if ( curLine.empty() )
- {
- // we can't use GetTextExtent - it will return 0 for both width
- // and height and an empty line should count in height
- // calculation
-
- // assume that this line has the same height as the previous
- // one
- if ( !heightLineDefault )
- heightLineDefault = heightLine;
-
- if ( !heightLineDefault )
- {
- // but we don't know it yet - choose something reasonable
- DoGetTextExtent(wxT("W"), NULL, &heightLineDefault,
- NULL, NULL, font);
- }
-
- heightTextTotal += heightLineDefault;
- }
- else
- {
- DoGetTextExtent(curLine, &widthLine, &heightLine,
- NULL, NULL, font);
- if ( widthLine > widthTextMax )
- widthTextMax = widthLine;
- heightTextTotal += heightLine;
- }
-
- if ( pc == text.end() )
- {
- break;
- }
- else // '\n'
- {
- curLine.clear();
- }
- }
- else
- {
- curLine += *pc;
- }
- }
-
- if ( x )
- *x = widthTextMax;
- if ( y )
- *y = heightTextTotal;
- if ( h )
- *h = heightLine;
+ wxTextMeasure tm(GetOwner(), font && font->IsOk() ? font : &m_font);
+ tm.GetMultiLineTextExtent(text, x, y, h);
}
void wxDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1,
void
wxDCImpl::DoDrawPolyPolygon(int n,
- int count[],
- wxPoint points[],
+ const int count[],
+ const wxPoint points[],
wxCoord xoffset, wxCoord yoffset,
wxPolygonFillMode fillStyle)
{
int i, j, lastOfs;
wxPoint* pts;
- wxPen pen;
for (i = j = lastOfs = 0; i < n; i++)
{
pts[j++] = pts[lastOfs];
}
- pen = GetPen();
- SetPen(wxPen(*wxBLACK, 0, wxPENSTYLE_TRANSPARENT));
- DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle);
- SetPen(pen);
+ {
+ wxDCPenChanger setTransp(*m_owner, *wxTRANSPARENT_PEN);
+ DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle);
+ }
+
for (i = j = 0; i < n; i++)
{
DoDrawLines(count[i], pts+j, xoffset, yoffset);
DrawSpline(WXSIZEOF(points), points);
}
-void wxDCImpl::DrawSpline(int n, wxPoint points[])
+void wxDCImpl::DrawSpline(int n, const wxPoint points[])
{
wxPointList list;
for ( int i = 0; i < n; i++ )
- list.Append(&points[i]);
+ list.Append(const_cast<wxPoint*>(&points[i]));
DrawSpline(&list);
}
{
wxCHECK_RET( IsOk(), wxT("invalid window dc") );
- wxPoint *p;
+ const wxPoint *p;
double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
double x1, y1, x2, y2;
// empty list
return;
- p = (wxPoint *)node->GetData();
+ p = node->GetData();
x1 = p->x;
y1 = p->y;
wx_spline_add_point(x1, y1);
while ((node = node->GetNext())
-#if !wxUSE_STL
+#if !wxUSE_STD_CONTAINERS
!= NULL
-#endif // !wxUSE_STL
+#endif // !wxUSE_STD_CONTAINERS
)
{
p = node->GetData();
//Radius
- wxInt32 cx = rect.GetWidth() / 2;
- wxInt32 cy = rect.GetHeight() / 2;
- wxInt32 nRadius;
+ double cx = rect.GetWidth() / 2;
+ double cy = rect.GetHeight() / 2;
+ double dRadius;
if (cx < cy)
- nRadius = cx;
+ dRadius = cx;
else
- nRadius = cy;
+ dRadius = cy;
//Offset of circle
- wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
- wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
+ double ptX, ptY;
+ ptX = circleCenter.x;
+ ptY = circleCenter.y;
+ double nCircleOffX = ptX - cx;
+ double nCircleOffY = ptY - cy;
+
+ double dGradient;
+ double dx, dy;
for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
{
for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
{
//get color difference
- wxInt32 nGradient = ((nRadius -
- (wxInt32)sqrt(
- pow((double)(x - cx - nCircleOffX), 2) +
- pow((double)(y - cy - nCircleOffY), 2)
- )) * 100) / nRadius;
+ dx = x;
+ dy = y;
+
+ dGradient = ((dRadius - sqrt( (dx - cx - nCircleOffX) * (dx - cx - nCircleOffX)
+ +(dy - cy - nCircleOffY) * (dy - cy - nCircleOffY)
+ )
+ ) * 100
+ ) / dRadius;
//normalize Gradient
- if (nGradient < 0 )
- nGradient = 0;
+ if (dGradient < 0)
+ dGradient = 0.0;
//get dest colors
- nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
- nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
- nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
+ nR = (wxUint8)(nR1 + ((nR2 - nR1) * dGradient / 100));
+ nG = (wxUint8)(nG1 + ((nG2 - nG1) * dGradient / 100));
+ nB = (wxUint8)(nB1 + ((nB2 - nB1) * dGradient / 100));
//set the pixel
- m_pen = wxColour(nR,nG,nB);
+ SetPen(wxColour(nR,nG,nB));
DoDrawPoint(x + rect.GetLeft(), y + rect.GetTop());
}
}
SetLayoutDirection(win->GetLayoutDirection());
}
+void wxDCImpl::DoGetFontMetrics(int *height,
+ int *ascent,
+ int *descent,
+ int *internalLeading,
+ int *externalLeading,
+ int *averageWidth) const
+{
+ // Average width is typically the same as width of 'x'.
+ wxCoord h, d;
+ DoGetTextExtent("x", averageWidth, &h, &d, externalLeading);
+
+ if ( height )
+ *height = h;
+ if ( ascent )
+ *ascent = h - d;
+ if ( descent )
+ *descent = d;
+ if ( internalLeading )
+ *internalLeading = 0;
+}
+
//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------
GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine);
wxCoord width, height;
- if ( bitmap.Ok() )
+ if ( bitmap.IsOk() )
{
width = widthText + bitmap.GetWidth();
height = bitmap.GetHeight();
wxCoord x0 = x,
y0 = y,
width0 = width;
- if ( bitmap.Ok() )
+ if ( bitmap.IsOk() )
{
DrawBitmap(bitmap, x, y, true /* use mask */);
yUnderscore = 0;
// split the string into lines and draw each of them separately
+ //
+ // NB: while wxDC::DrawText() on some platforms supports drawing multi-line
+ // strings natively, this is not the case for all of them, notably not
+ // wxMSW which uses this function for multi-line texts, so we may only
+ // call DrawText() for single-line strings from here to avoid infinite
+ // recursion.
wxString curLine;
for ( wxString::const_iterator pc = text.begin(); ; ++pc )
{
{
if ( pc - text.begin() == indexAccel )
{
- // remeber to draw underscore here
+ // remember to draw underscore here
GetTextExtent(curLine, &startUnderscore, NULL);
curLine += *pc;
GetTextExtent(curLine, &endUnderscore, NULL);
// it should be of the same colour as text
SetPen(wxPen(GetTextForeground(), 0, wxPENSTYLE_SOLID));
- yUnderscore--;
+ // This adjustment is relatively arbitrary: we need to draw the
+ // underline slightly higher to avoid overflowing the character cell
+ // but whether we should do it 1, 2 or 3 pixels higher is not clear.
+ //
+ // The currently used value seems to be compatible with native MSW
+ // behaviour, i.e. it results in the same appearance of the owner-drawn
+ // and normal labels.
+ yUnderscore -= 2;
DrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore);
}
y2 = y2-y-y+1;
--y;
}
- // old y now to big: set point with old y, old x
+ // old y now too big: set point with old y, old x
if( bNewPoint && x>1)
{
int x1 = x - 1;
projects / wxWidgets.git / blobdiff