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Bug 283055 - better svg text hit detection on cairo.

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This commit is contained in:
tor%cs.brown.edu 2005-02-21 21:24:36 +00:00
parent e3d2934492
commit 5eda5d5031
1 changed files with 12 additions and 13 deletions
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25
layout/svg/renderer/src/cairo/nsSVGCairoGlyphGeometry.cpp
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@ -57,6 +57,7 @@
#include "nsISVGGradient.h"
#include "nsSVGCairoGradient.h"
#include "nsIDOMSVGRect.h"
/**
* \addtogroup cairo_renderer cairo Rendering Engine
@ -479,13 +480,6 @@ nsSVGCairoGlyphGeometry::ContainsPoint(float x, float y, PRBool *_retval)
{
*_retval = PR_FALSE;
// early reject test
if (mCoveredRegion) {
nsCOMPtr<nsISVGCairoRegion> region = do_QueryInterface(mCoveredRegion);
if (!region->Contains(x,y))
return NS_OK;
}
/* get the metrics */
nsCOMPtr<nsISVGCairoGlyphMetrics> metrics;
{
@ -497,16 +491,21 @@ nsSVGCairoGlyphGeometry::ContainsPoint(float x, float y, PRBool *_retval)
return NS_ERROR_FAILURE;
}
cairo_t *ctx = cairo_create();
cairo_set_tolerance(ctx, 1.0);
nsCOMPtr<nsIDOMSVGRect> box;
metrics->GetBoundingBox(getter_AddRefs(box));
cairo_t *ctx = cairo_create();
GetGlobalTransform(ctx);
metrics->SelectFont(ctx);
float sX, sY, eX, eY, eWidth, eHeight;
mSource->GetX(&sX);
mSource->GetY(&sY);
box->GetX(&eX);
box->GetY(&eY);
box->GetWidth(&eWidth);
box->GetHeight(&eHeight);
cairo_rectangle(ctx, sX + eX, sY + eY, eWidth, eHeight);
nsAutoString text;
mSource->GetCharacterData(text);
cairo_text_path(ctx, (unsigned char*)NS_ConvertUCS2toUTF8(text).get());
cairo_default_matrix(ctx);
*_retval = cairo_in_fill(ctx, x, y);
cairo_destroy(ctx);