mirror of
https://github.com/mozilla/gecko-dev.git
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257 lines
8.0 KiB
Diff
257 lines
8.0 KiB
Diff
Bug 29092 - Fix glyphs rendering for cairo-qpainter-surface
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diff --git a/src/cairo-qt-surface.cpp b/src/cairo-qt-surface.cpp
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index 2ac06ef..5b61b42 100644
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--- a/src/cairo-qt-surface.cpp
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+++ b/src/cairo-qt-surface.cpp
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@@ -45,6 +45,7 @@
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#include "cairo-surface-clipper-private.h"
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#include "cairo-types-private.h"
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+#include "cairo-ft.h"
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#include "cairo-qt.h"
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#include <memory>
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@@ -58,14 +59,10 @@
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#include <QtGui/QPen>
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#include <QtGui/QWidget>
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#include <QtGui/QX11Info>
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+#include <QtCore/QVarLengthArray>
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-#if CAIRO_HAS_XLIB_XRENDER_SURFACE
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-#include "cairo-xlib.h"
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-#include "cairo-xlib-xrender.h"
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-// I hate X
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-#undef Status
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-#undef CursorShape
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-#undef Bool
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+#if (QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)) || defined(QT_GLYPHS_API_BACKPORT)
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+extern void qt_draw_glyphs(QPainter *, const quint32 *glyphs, const QPointF *positions, int count);
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#endif
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#include <sys/time.h>
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@@ -118,15 +115,6 @@ struct cairo_qt_surface_t {
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cairo_bool_t supports_porter_duff;
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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- /* temporary, so that we can share the xlib surface's glyphs code */
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- bool xlib_has_clipping;
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- cairo_surface_t *xlib_equiv;
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- QRect xlib_clip_bounds;
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- int xlib_clip_serial;
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- QPoint redir_offset;
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-#endif
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-
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QPainter *p;
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/* The pixmap/image constructors will store their objects here */
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@@ -145,11 +133,6 @@ struct cairo_qt_surface_t {
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*/
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static cairo_bool_t _qpixmaps_have_no_alpha = FALSE;
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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-slim_hidden_proto (cairo_xlib_surface_create);
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-slim_hidden_proto (cairo_xlib_surface_create_with_xrender_format);
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-#endif
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-
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/**
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** Helper methods
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**/
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@@ -498,11 +481,6 @@ _cairo_qt_surface_finish (void *abstract_surface)
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_cairo_surface_clipper_reset (&qs->clipper);
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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- if (qs->xlib_equiv)
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- cairo_surface_destroy (qs->xlib_equiv);
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-#endif
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-
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if (qs->image)
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delete qs->image;
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@@ -1392,33 +1370,40 @@ _cairo_qt_surface_show_glyphs (void *abstract_surface,
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cairo_clip_t *clip,
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int *remaining_glyphs)
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{
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+#if (QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)) || defined(QT_GLYPHS_API_BACKPORT)
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cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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- /* If we have an equivalent X surface, let the xlib surface handle this
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- * until we figure out how to do this natively with Qt.
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- */
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- if (qs->xlib_equiv) {
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- D(fprintf(stderr, "q[%p] show_glyphs (x11 equiv) op:%s nglyphs: %d\n", abstract_surface, _opstr(op), num_glyphs));
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-
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- for (int i = 0; i < num_glyphs; i++) {
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- glyphs[i].x -= qs->redir_offset.x();
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- glyphs[i].y -= qs->redir_offset.y();
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- }
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-
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- return (cairo_int_status_t)
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- _cairo_surface_show_text_glyphs (qs->xlib_equiv,
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- op, source,
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- NULL, 0,
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- glyphs, num_glyphs,
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- NULL, 0,
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- (cairo_text_cluster_flags_t) 0,
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- scaled_font,
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- clip);
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+ // pick out the colour to use from the cairo source
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+ cairo_solid_pattern_t *solid = (cairo_solid_pattern_t*) source;
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+ cairo_scaled_glyph_t* glyph;
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+ // documentation says you have to freeze the cache, but I don't believe it
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+ _cairo_scaled_font_freeze_cache(scaled_font);
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+
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+ QColor tempColour(solid->color.red * 255, solid->color.green * 255, solid->color.blue * 255);
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+ QVarLengthArray<QPointF> positions(num_glyphs);
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+ QVarLengthArray<unsigned int> glyphss(num_glyphs);
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+ FT_Face face = cairo_ft_scaled_font_lock_face (scaled_font);
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+ const FT_Size_Metrics& ftMetrics = face->size->metrics;
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+ QFont font(face->family_name);
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+ font.setStyleStrategy(QFont::NoFontMerging);
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+ font.setBold(face->style_flags & FT_STYLE_FLAG_BOLD);
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+ font.setItalic(face->style_flags & FT_STYLE_FLAG_ITALIC);
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+ font.setKerning(face->face_flags & FT_FACE_FLAG_KERNING);
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+ font.setPixelSize(ftMetrics.y_ppem);
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+ cairo_ft_scaled_font_unlock_face(scaled_font);
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+ qs->p->setFont(font);
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+ qs->p->setPen(tempColour);
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+ for (int currentGlyph = 0; currentGlyph < num_glyphs; currentGlyph++) {
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+ positions[currentGlyph].setX(glyphs[currentGlyph].x);
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+ positions[currentGlyph].setY(glyphs[currentGlyph].y);
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+ glyphss[currentGlyph] = glyphs[currentGlyph].index;
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}
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-#endif
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-
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+ qt_draw_glyphs(qs->p, glyphss.data(), positions.data(), num_glyphs);
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+ _cairo_scaled_font_thaw_cache(scaled_font);
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+ return CAIRO_INT_STATUS_SUCCESS;
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+#else
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return CAIRO_INT_STATUS_UNSUPPORTED;
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+#endif
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}
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static cairo_int_status_t
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@@ -1555,24 +1540,6 @@ _cairo_qt_surface_composite (cairo_operator_t op,
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}
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static cairo_status_t
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-_cairo_qt_surface_flush (void *abstract_surface)
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-{
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- cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
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-
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- if (qs->p == NULL)
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- return CAIRO_STATUS_SUCCESS;
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-
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- if (qs->image || qs->pixmap) {
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- qs->p->end ();
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- qs->p->begin (qs->p->device ());
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- } else {
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- qs->p->restore ();
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- }
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-
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- return CAIRO_STATUS_SUCCESS;
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-}
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-
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-static cairo_status_t
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_cairo_qt_surface_mark_dirty (void *abstract_surface,
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int x, int y,
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int width, int height)
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@@ -1609,7 +1576,7 @@ static const cairo_surface_backend_t cairo_qt_surface_backend = {
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_cairo_qt_surface_get_extents,
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NULL, /* old_show_glyphs */
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NULL, /* get_font_options */
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- _cairo_qt_surface_flush,
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+ NULL, /* flush */
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_cairo_qt_surface_mark_dirty,
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NULL, /* scaled_font_fini */
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NULL, /* scaled_glyph_fini */
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@@ -1629,64 +1596,6 @@ static const cairo_surface_backend_t cairo_qt_surface_backend = {
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NULL, /* show_text_glyphs */
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};
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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-static cairo_surface_t *
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-_cairo_qt_create_xlib_surface (cairo_qt_surface_t *qs)
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-{
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- if (!qs->p)
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- return NULL;
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-
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- QPaintDevice *pd = qs->p->device();
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- if (!pd)
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- return NULL;
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-
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- QPoint offs;
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- QPaintDevice *rpd = QPainter::redirected(pd, &offs);
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- if (rpd) {
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- pd = rpd;
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- qs->redir_offset = offs;
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- }
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-
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- if (pd->devType() == QInternal::Widget) {
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- QWidget *w = (QWidget*) pd;
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- QX11Info xinfo = w->x11Info();
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-
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- return cairo_xlib_surface_create (xinfo.display(),
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- (Drawable) w->handle (),
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- (Visual *) xinfo.visual (),
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- w->width (), w->height ());
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- } else if (pd->devType() == QInternal::Pixmap) {
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- QPixmap *pixmap = (QPixmap*) pd;
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- QX11Info xinfo = pixmap->x11Info ();
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- XRenderPictFormat *xrender_format;
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- int pict_format;
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-
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- switch (pixmap->depth ()) {
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- case 1:
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- pict_format = PictStandardA1; break;
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- case 8:
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- pict_format = PictStandardA8; break;
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- case 24:
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- pict_format = PictStandardRGB24; break;
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- default:
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- ASSERT_NOT_REACHED;
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- case 32:
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- pict_format = PictStandardARGB32; break;
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- }
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- xrender_format = XRenderFindStandardFormat (xinfo.display (),
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- pict_format);
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-
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- return cairo_xlib_surface_create_with_xrender_format (xinfo.display(),
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- (Drawable) pixmap->handle (),
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- ScreenOfDisplay (xinfo.display (),
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- xinfo.screen ()),
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- xrender_format,
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- pixmap->width (), pixmap->height ());
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- } else
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- return NULL;
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-}
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-#endif
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-
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cairo_surface_t *
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cairo_qt_surface_create (QPainter *painter)
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{
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@@ -1717,10 +1626,6 @@ cairo_qt_surface_create (QPainter *painter)
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qs->window = painter->window();
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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- qs->xlib_equiv = _cairo_qt_create_xlib_surface (qs);
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-#endif
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-
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D(fprintf(stderr, "qpainter_surface_create: window: [%d %d %d %d] pd:%d\n",
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qs->window.x(), qs->window.y(), qs->window.width(), qs->window.height(),
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qs->supports_porter_duff));
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@@ -1819,10 +1724,6 @@ cairo_qt_surface_create_with_qpixmap (cairo_content_t content,
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qs->window = QRect(0, 0, width, height);
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-#if defined(Q_WS_X11) && CAIRO_HAS_XLIB_XRENDER_SURFACE
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- qs->xlib_equiv = _cairo_qt_create_xlib_surface (qs);
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-#endif
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-
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D(fprintf(stderr, "qpainter_surface_create: qpixmap: [%d %d %d %d] pd:%d\n",
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qs->window.x(), qs->window.y(), qs->window.width(), qs->window.height(),
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qs->supports_porter_duff));
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