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gecko-dev
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Fix 2 things. 

1) dont do the RGB -> BGR conversion.  Its not needed thanks
to a IMGLIB workaround i just checked in.

2) create a pixmap from the image data only ONCE for unique image bits and
re paint that, instead of doing this every single time we render.
This commit is contained in:
ramiro%netscape.com 1999-03-26 09:53:13 +00:00
Родитель 2b93ebeee6
Коммит baf417e684
2 изменённых файлов: 123 добавлений и 172 удалений
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286
gfx/src/gtk/nsImageGTK.cpp
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@ -28,6 +28,10 @@
#undef CHEAP_PERFORMANCE_MEASUREMENT
// Defining this will trace the allocation of images. This includes
// ctor, dtor and update.
#undef TRACE_IMAGE_ALLOCATION
static NS_DEFINE_IID(kIImageIID, NS_IIMAGE_IID);
//------------------------------------------------------------
@ -41,6 +45,12 @@ nsImageGTK::nsImageGTK()
mDepth = 0;
mAlphaBits = nsnull;
mAlphaPixmap = nsnull;
mImagePixmap = nsnull;
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::nsImageGTK(this=%p)\n",
this);
#endif
}
//------------------------------------------------------------
@ -59,6 +69,15 @@ nsImageGTK::~nsImageGTK()
gdk_pixmap_unref(mAlphaPixmap);
}
}
if (nsnull != mImagePixmap) {
gdk_pixmap_unref(mImagePixmap);
}
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::~nsImageGTK(this=%p)\n",
this);
#endif
}
NS_IMPL_ISUPPORTS(nsImageGTK, kIImageIID);
@ -85,6 +104,14 @@ nsresult
}
}
// mImagePixmap gets created once per unique image bits in Draw()
// ImageUpdated(nsImageUpdateFlags_kBitsChanged) can cause the
// image bits to change and mImagePixmap will be unrefed and nulled.
if (nsnull != mImagePixmap) {
gdk_pixmap_unref(mImagePixmap);
mImagePixmap = nsnull;
}
if (24 == aDepth) {
mNumBytesPixel = 3;
} else {
@ -96,6 +123,15 @@ nsresult
mHeight = aHeight;
mDepth = aDepth;
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::Init(this=%p,%d,%d,%d,%d)\n",
this,
aWidth,
aHeight,
aDepth,
aMaskRequirements);
#endif
// create the memory for the image
ComputMetrics();
@ -257,179 +293,32 @@ nsImageGTK::ImageUpdated(nsIDeviceContext *aContext,
PRUint8 aFlags,
nsRect *aUpdateRect)
{
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::ImageUpdated(this=%p,%d)\n",
this,
aFlags);
#endif
if (IsFlagSet(nsImageUpdateFlags_kBitsChanged, aFlags)){
if (nsnull != mAlphaPixmap) {
gdk_pixmap_unref(mAlphaPixmap);
mAlphaPixmap = nsnull;
}
}
}
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define HAIRY_CONVERT_888
#endif
// mImagePixmap gets created once per unique image bits in Draw()
// ImageUpdated(nsImageUpdateFlags_kBitsChanged) can cause the
// image bits to change and mImagePixmap will be unrefed and nulled.
if (nsnull != mImagePixmap) {
gdk_pixmap_unref(mImagePixmap);
mImagePixmap = nsnull;
}
}
}
#ifdef CHEAP_PERFORMANCE_MEASUREMENT
static PRTime gConvertTime, gStartTime, gPixmapTime, gEndTime;
#endif
#ifdef HAIRY_CONVERT_888
#include "prtime.h"
// This is really ugly. Mozilla uses BGR image data, while
// gdk_rgb uses RGB data. So before we draw an image
// we copy it to a temp buffer and swap R and B.
//
// The code here comes from gdk_rgb_convert_888_lsb.
//
static void
moz_gdk_draw_bgr_image (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
gint width,
gint height,
GdkRgbDither dith,
guchar *rgb_buf,
gint rowstride)
{
int tx, ty;
guchar *tmp_buf;
guchar *obuf, *obptr;
gint bpl;
guchar *bptr, *bp2;
int r, g, b;
bpl = (width * 3 + 3) & ~0x3;
tmp_buf = (guchar *)g_malloc (bpl * height);
bptr = rgb_buf;
obuf = tmp_buf;
for (ty = 0; ty < height; ty++)
{
bp2 = bptr;
obptr = obuf;
if (((unsigned long)obuf | (unsigned long) bp2) & 3)
{
for (tx = 0; tx < width; tx++)
{
r = bp2[0];
g = bp2[1];
b = bp2[2];
*obptr++ = b;
*obptr++ = g;
*obptr++ = r;
bp2 += 3;
}
}
else
{
for (tx = 0; tx < width - 3; tx += 4)
{
guint32 r1b0g0r0;
guint32 g2r2b1g1;
guint32 b3g3r3b2;
r1b0g0r0 = ((guint32 *)bp2)[0];
g2r2b1g1 = ((guint32 *)bp2)[1];
b3g3r3b2 = ((guint32 *)bp2)[2];
((guint32 *)obptr)[0] =
(r1b0g0r0 & 0xff00) |
((r1b0g0r0 & 0xff0000) >> 16) |
(((g2r2b1g1 & 0xff00) | (r1b0g0r0 & 0xff)) << 16);
((guint32 *)obptr)[1] =
(g2r2b1g1 & 0xff0000ff) |
((r1b0g0r0 & 0xff000000) >> 16) |
((b3g3r3b2 & 0xff) << 16);
((guint32 *)obptr)[2] =
(((g2r2b1g1 & 0xff0000) | (b3g3r3b2 & 0xff000000)) >> 16) |
((b3g3r3b2 & 0xff00) << 16) |
((b3g3r3b2 & 0xff0000));
bp2 += 12;
obptr += 12;
}
for (; tx < width; tx++)
{
r = bp2[0];
g = bp2[1];
b = bp2[2];
*obptr++ = b;
*obptr++ = g;
*obptr++ = r;
bp2 += 3;
}
}
bptr += rowstride;
obuf += bpl;
}
#ifdef CHEAP_PERFORMANCE_MEASUREMENT
gConvertTime = PR_Now();
#endif
gdk_draw_rgb_image (drawable, gc, x, y, width, height,
dith, tmp_buf, bpl);
g_free (tmp_buf);
}
#else
static void
moz_gdk_draw_bgr_image (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
gint width,
gint height,
GdkRgbDither dith,
guchar *rgb_buf,
gint rowstride)
{
int tx, ty;
guchar *tmp_buf;
guchar *obuf;
gint bpl;
guchar *bptr, *bp2;
int r, g, b;
bpl = (width * 3 + 3) & ~0x3;
tmp_buf = (guchar *)g_malloc (bpl * height);
bptr = rgb_buf;
obuf = tmp_buf;
for (ty = 0; ty < height; ty++)
{
bp2 = bptr;
for (tx = 0; tx < width; tx++)
{
r = bp2[0];
g = bp2[1];
b = bp2[2];
obuf[tx * 3] = b;
obuf[tx * 3 + 1] = g;
obuf[tx * 3 + 2] = r;
bp2 += 3;
}
bptr += rowstride;
obuf += bpl;
}
gdk_draw_rgb_image (drawable, gc, x, y, width, height,
dith, tmp_buf, bpl);
g_free (tmp_buf);
}
#endif
//------------------------------------------------------------
// Draw the bitmap, this method has a source and destination coordinates
NS_IMETHODIMP
nsImageGTK::Draw(nsIRenderingContext &aContext, nsDrawingSurface aSurface,
@ -438,9 +327,11 @@ nsImageGTK::Draw(nsIRenderingContext &aContext, nsDrawingSurface aSurface,
{
g_return_val_if_fail ((aSurface != nsnull), NS_ERROR_FAILURE);
abort();
nsDrawingSurfaceGTK *drawing = (nsDrawingSurfaceGTK*)aSurface;
moz_gdk_draw_bgr_image (drawing->GetDrawable(),
gdk_draw_rgb_image (drawing->GetDrawable(),
drawing->GetGC(),
aDX, aDY, aDWidth, aDHeight,
GDK_RGB_DITHER_MAX,
@ -461,6 +352,7 @@ nsImageGTK::Draw(nsIRenderingContext &aContext,
{
g_return_val_if_fail ((aSurface != nsnull), NS_ERROR_FAILURE);
// XXX kipp: this is temporary code until we eliminate the
// width/height arguments from the draw method.
if ((aWidth != mWidth) || (aHeight != mHeight)) {
@ -468,6 +360,15 @@ nsImageGTK::Draw(nsIRenderingContext &aContext,
aHeight = mHeight;
}
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::Draw(this=%p,x=%d,y=%d,width=%d,height=%d)\n",
this,
aX,
aY,
aWidth,
aHeight);
#endif
nsDrawingSurfaceGTK* drawing = (nsDrawingSurfaceGTK*) aSurface;
XImage *x_image = nsnull;
@ -542,6 +443,39 @@ nsImageGTK::Draw(nsIRenderingContext &aContext,
#endif
}
// Render unique image bits onto an off screen pixmap only once
// The image bits can change as a result of ImageUpdated() - for
// example: animated GIFs.
if (nsnull == mImagePixmap)
{
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::Draw(this=%p) gdk_pixmap_new(nsnull,width=%d,height=%d,depth=%d)\n",
this,
aWidth,
aHeight,
mDepth);
#endif
GdkVisual * rgb_visual = gdk_rgb_get_visual();
gint rgb_depth = rgb_visual->depth;
// Create an off screen pixmap to hold the image bits.
mImagePixmap = gdk_pixmap_new(nsnull, aWidth, aHeight, rgb_depth);
// Make sure the clip region is clear, since we are rendering the
// image bits to an off screen pixmap and this always happens at the
// origin.
gdk_gc_set_clip_origin(drawing->GetGC(), 0, 0);
gdk_gc_set_clip_mask(drawing->GetGC(), nsnull);
// Render the image bits into an off screen pixmap
gdk_draw_rgb_image (mImagePixmap,
drawing->GetGC(),
0, 0, aWidth, aHeight,
GDK_RGB_DITHER_MAX,
mImageBits, mRowBytes);
}
if (nsnull != mAlphaPixmap)
{
// Setup gc to use the given alpha-pixmap for clipping
@ -549,11 +483,25 @@ nsImageGTK::Draw(nsIRenderingContext &aContext,
gdk_gc_set_clip_origin(drawing->GetGC(), aX, aY);
}
moz_gdk_draw_bgr_image (drawing->GetDrawable(),
drawing->GetGC(),
aX, aY, aWidth, aHeight,
GDK_RGB_DITHER_MAX,
mImageBits, mRowBytes);
#ifdef TRACE_IMAGE_ALLOCATION
printf("nsImageGTK::Draw(this=%p) gdk_draw_pixmap(x=%d,y=%d,width=%d,height=%d)\n",
this,
aX,
aY,
aWidth,
aHeight);
#endif
// Draw the image pixmap onto the drawing surface
gdk_draw_pixmap(drawing->GetDrawable(), // drawable
drawing->GetGC(), // gc
mImagePixmap, // src
0, // xsrc
0, // ysrc
aX, // xdest
aY, // ydest
aWidth, // width
aHeight); // height
if (mAlphaPixmap != nsnull)
{
@ -564,7 +512,9 @@ nsImageGTK::Draw(nsIRenderingContext &aContext,
#ifdef CHEAP_PERFORMANCE_MEASUREMENT
gEndTime = PR_Now();
printf("nsImageGTK: for %d,%d image, total=%lld pixmap=%lld, cvt=%lld\n",
printf("nsImageGTK::Draw(this=%p,w=%d,h=%d) total=%lld pixmap=%lld, cvt=%lld\n",
this,
aWidth, aHeight,
gEndTime - gStartTime,
gPixmapTime - gStartTime,

1
gfx/src/gtk/nsImageGTK.h
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@ -103,6 +103,7 @@ private:
PRInt16 mAlphaWidth; // alpha layer width
PRInt16 mAlphaHeight; // alpha layer height
nsPoint mLocation; // alpha mask location
GdkPixmap *mImagePixmap;
};
#endif