// Name: src/gtk/dcclient.cpp
// Purpose: wxWindowDCImpl implementation
// Author: Robert Roebling
-// RCS-ID: $Id$
// Copyright: (c) 1998 Robert Roebling, Chris Breeze
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
static inline double dmax(double a, double b) { return a > b ? a : b; }
static inline double dmin(double a, double b) { return a < b ? a : b; }
-static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
-
static GdkPixmap* GetHatch(int style)
{
wxASSERT(style >= wxBRUSHSTYLE_FIRST_HATCH && style <= wxBRUSHSTYLE_LAST_HATCH);
if (m)
mask = *m;
}
+
+ GdkPixmap* mask_new = NULL;
if (mask)
{
- GdkPixmap* mask_new = NULL;
if (isScaled)
{
mask = ScaleMask(mask, 0, 0, w, h, ww, hh, m_scaleX, m_scaleY);
}
gdk_gc_set_clip_mask(use_gc, mask);
gdk_gc_set_clip_origin(use_gc, xx, yy);
- if (mask_new)
- g_object_unref(mask_new);
}
// determine whether to use pixmap or pixbuf
if (pixmap_new)
g_object_unref(pixmap_new);
if (mask)
+ {
gdk_gc_set_clip_region(use_gc, clipRegion);
+
+ // Notice that we can only release the mask now, we can't do it before
+ // the calls to gdk_draw_xxx() above as they crash with X error with
+ // GTK+ up to 2.20.1 (i.e. it works with 2.20 but is known to not work
+ // with 2.16.1 and below).
+ if (mask_new)
+ g_object_unref(mask_new);
+ }
}
bool wxWindowDCImpl::DoBlit( wxCoord xdest, wxCoord ydest,
wxCoord xLogical,
wxCoord yLogical)
{
- wxCHECK_RET( IsOk(), wxT("invalid window dc") );
-
- if (!m_gdkwindow) return;
-
- if (text.empty()) return;
-
- wxCoord x = XLOG2DEV(xLogical),
- y = YLOG2DEV(yLogical);
-
- 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") );
-
- gdk_pango_context_set_colormap( m_context, m_cmap ); // not needed in gtk+ >= 2.6
-
- wxCharBuffer data = wxGTK_CONV(text);
- if ( !data )
- return;
-
- pango_layout_set_text(m_layout, data, data.length());
- const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
-
- int oldSize = 0;
- const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
- if (isScaled)
- {
- // If there is a user or actually any scale applied to
- // the device context, scale the font.
-
- // scale font description
- oldSize = pango_font_description_get_size(m_fontdesc);
- pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY));
-
- // actually apply scaled font
- pango_layout_set_font_description( m_layout, m_fontdesc );
- }
-
- int w, h;
- pango_layout_get_pixel_size(m_layout, &w, &h);
-
- // Draw layout.
- int x_rtl = x;
- if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
- x_rtl -= w;
-
- const GdkColor* bg_col = NULL;
- if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
- bg_col = m_textBackgroundColour.GetColor();
-
- gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x_rtl, y, m_layout, NULL, bg_col);
-
- if (isScaled)
- {
- // reset unscaled size
- pango_font_description_set_size( m_fontdesc, oldSize );
-
- // actually apply unscaled font
- pango_layout_set_font_description( m_layout, m_fontdesc );
- }
- if (setAttrs)
- {
- // undo underline attributes setting:
- pango_layout_set_attributes(m_layout, NULL);
- }
-
- CalcBoundingBox(xLogical + int(w / m_scaleX), yLogical + int(h / m_scaleY));
- CalcBoundingBox(xLogical, yLogical);
+ DoDrawRotatedText(text, xLogical, yLogical, 0);
}
-// TODO: When GTK2.6 is required, merge DoDrawText and DoDrawRotatedText to
-// avoid code duplication
-void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
+void wxWindowDCImpl::DoDrawRotatedText(const wxString& text, int xLogical, int yLogical, double angle)
{
if (!m_gdkwindow || text.empty())
return;
wxCHECK_RET( IsOk(), wxT("invalid window dc") );
- x = XLOG2DEV(x);
- y = YLOG2DEV(y);
-
pango_layout_set_text(m_layout, wxGTK_CONV(text), -1);
const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
- int oldSize = 0;
- const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
- if (isScaled)
- {
- //TODO: when Pango >= 1.6 is required, use pango_matrix_scale()
- // If there is a user or actually any scale applied to
- // the device context, scale the font.
-
- // scale font description
- oldSize = pango_font_description_get_size(m_fontdesc);
- pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY));
-
- // actually apply scaled font
- pango_layout_set_font_description( m_layout, m_fontdesc );
- }
-
- int w, h;
- pango_layout_get_pixel_size(m_layout, &w, &h);
const GdkColor* bg_col = NULL;
if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
bg_col = m_textBackgroundColour.GetColor();
- // rotate the text
PangoMatrix matrix = PANGO_MATRIX_INIT;
- pango_matrix_rotate (&matrix, angle);
- pango_context_set_matrix (m_context, &matrix);
- pango_layout_context_changed (m_layout);
-
- // To be compatible with MSW, the rotation axis must be in the old
- // top-left corner.
- // Calculate the vertices of the rotated rectangle containing the text,
- // relative to the old top-left vertex.
- // We could use the matrix for this, but it's simpler with trignonometry.
- double rad = DegToRad(angle);
- // the rectangle vertices are counted clockwise with the first one
- // being at (0, 0)
- double x2 = w * cos(rad);
- double y2 = -w * sin(rad); // y axis points to the bottom, hence minus
- double x4 = h * sin(rad);
- double y4 = h * cos(rad);
- double x3 = x4 + x2;
- double y3 = y4 + y2;
- // Then we calculate max and min of the rotated rectangle.
- wxCoord maxX = (wxCoord)(dmax(dmax(0, x2), dmax(x3, x4)) + 0.5),
- maxY = (wxCoord)(dmax(dmax(0, y2), dmax(y3, y4)) + 0.5),
- minX = (wxCoord)(dmin(dmin(0, x2), dmin(x3, x4)) - 0.5),
- minY = (wxCoord)(dmin(dmin(0, y2), dmin(y3, y4)) - 0.5);
-
- gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x+minX, y+minY,
- m_layout, NULL, bg_col);
+ if (!wxIsSameDouble(m_scaleX, 1) || !wxIsSameDouble(m_scaleY, 1) || !wxIsNullDouble(angle))
+ {
+ pango_matrix_scale(&matrix, m_scaleX, m_scaleY);
+ pango_matrix_rotate(&matrix, angle);
+ pango_context_set_matrix(m_context, &matrix);
+ pango_layout_context_changed(m_layout);
+ }
- if (setAttrs)
- pango_layout_set_attributes(m_layout, NULL);
+ int w, h;
+ pango_layout_get_pixel_size(m_layout, &w, &h);
- // clean up the transformation matrix
- pango_context_set_matrix(m_context, NULL);
+ int x = LogicalToDeviceX(xLogical);
+ int y = LogicalToDeviceY(yLogical);
+ if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
+ x -= LogicalToDeviceXRel(w);
- if (isScaled)
+ if (wxIsNullDouble(angle))
{
- // reset unscaled size
- pango_font_description_set_size( m_fontdesc, oldSize );
-
- // actually apply unscaled font
- pango_layout_set_font_description( m_layout, m_fontdesc );
+ CalcBoundingBox(xLogical, yLogical);
+ CalcBoundingBox(xLogical + w, yLogical + h);
}
+ else
+ {
+ // To be compatible with MSW, the rotation axis must be in the old
+ // top-left corner.
+ // Calculate the vertices of the rotated rectangle containing the text,
+ // relative to the old top-left vertex.
+ // the rectangle vertices are counted clockwise with the first one
+ // being at (0, 0)
+ double x2 = w * matrix.xx;
+ double y2 = w * matrix.yx;
+ double x4 = h * matrix.xy;
+ double y4 = h * matrix.yy;
+ double x3 = x4 + x2;
+ double y3 = y4 + y2;
+ // Then we calculate max and min of the rotated rectangle.
+ wxCoord maxX = (wxCoord)(dmax(dmax(0, x2), dmax(x3, x4)) + 0.5),
+ maxY = (wxCoord)(dmax(dmax(0, y2), dmax(y3, y4)) + 0.5),
+ minX = (wxCoord)(dmin(dmin(0, x2), dmin(x3, x4)) - 0.5),
+ minY = (wxCoord)(dmin(dmin(0, y2), dmin(y3, y4)) - 0.5);
+ x += minX;
+ y += minY;
+ CalcBoundingBox(DeviceToLogicalX(x), DeviceToLogicalY(y));
+ CalcBoundingBox(DeviceToLogicalX(x + maxX - minX), DeviceToLogicalY(y + maxY - minY));
+ }
+
+ gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x, y, m_layout, NULL, bg_col);
- CalcBoundingBox(x+minX, y+minY);
- CalcBoundingBox(x+maxX, y+maxY);
+ pango_context_set_matrix(m_context, NULL);
+ if (setAttrs)
+ pango_layout_set_attributes(m_layout, NULL);
}
void wxWindowDCImpl::DoGetTextExtent(const wxString &string,
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