refactored DrawBitmap to support a version BBitmaps and one for ServerBitmaps, implemented InvertRect, but that was a while ago, and I didn't test it
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11960 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
parent
ffc80308e6
commit
a0c67cdb39
@ -10,3 +10,14 @@ B_OP_ALPHA (with B_ALPHA_OVERLAY) seems to *assign* the source alpha to the dest
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The BView pen location appears to be integer coords, which spoils the pen location version of BView::DrawString() for rotated text.
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Dest alpha is actually only interesting when drawing into a BBitmap. When drawing into the frame buffer, dest alpha is logically 255, it wouldn't even need to be assigned. Maybe we could save a few CPU cycles if we adjust the DrawingMode classes accordingly. For now, the modes work as expected when drawing into a BBitmap.
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Current comparision timings:
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drawing_mode: B_OP_COPY
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pen size: 1.0
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ellipse test: 5.15
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ellipse test AA: 13.90
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pen size: 2.0
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ellipse test: 15.2
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ellipse test AA: 11.0
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@ -22,6 +22,8 @@
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#include "PatternHandler.h"
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#include "RenderingBuffer.h"
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#include "ShapeConverter.h"
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#include "ServerBitmap.h"
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#include "ServerFont.h"
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#include "Painter.h"
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@ -581,98 +583,71 @@ void
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Painter::DrawBitmap(const BBitmap* bitmap,
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BRect bitmapRect, BRect viewRect) const
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{
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typedef agg::span_allocator<agg::rgba8> span_alloc_type;
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typedef agg::span_interpolator_linear<> interpolator_type;
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typedef agg::span_image_filter_rgba32_nn<agg::order_bgra32,
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interpolator_type> span_gen_type;
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typedef agg::renderer_scanline_aa<renderer_base, span_gen_type> image_renderer_type;
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if (bitmap && bitmap->IsValid()) {
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// the native bitmap coordinate system
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// (can have left top corner offset)
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BRect actualBitmapRect(bitmap->Bounds());
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if (bitmap && bitmap->IsValid()
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&& bitmapRect.IsValid() && bitmapRect.Intersects(bitmap->Bounds())
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&& viewRect.IsValid()) {
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BRect actualBitmapRect = bitmap->Bounds();
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// compensate for the lefttop offset the actualBitmapRect might have
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// NOTE: I have no clue why this next call gives a wrong result!
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// According to the BeBook, bitmapRect is supposed to be in native
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// bitmap space!
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// bitmapRect.OffsetBy(-actualBitmapRect.left, -actualBitmapRect.top);
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actualBitmapRect.OffsetBy(-actualBitmapRect.left, -actualBitmapRect.top);
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// calculate the scaling
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double xScale = (viewRect.Width() + 1) / (bitmapRect.Width() + 1);
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double yScale = (viewRect.Height() + 1) / (bitmapRect.Height() + 1);
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// constrain rect to passed bitmap bounds
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// and transfer the changes to the viewRect
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if (bitmapRect.left < actualBitmapRect.left) {
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float diff = actualBitmapRect.left - bitmapRect.left;
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viewRect.left += diff * xScale;
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bitmapRect.left = actualBitmapRect.left;
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}
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if (bitmapRect.top < actualBitmapRect.top) {
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float diff = actualBitmapRect.top - bitmapRect.top;
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viewRect.top += diff;
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bitmapRect.top = actualBitmapRect.top;
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}
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if (bitmapRect.right > actualBitmapRect.right) {
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float diff = bitmapRect.right - actualBitmapRect.right;
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viewRect.right -= diff;
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bitmapRect.right = actualBitmapRect.right;
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}
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if (bitmapRect.bottom > actualBitmapRect.bottom) {
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float diff = bitmapRect.right - actualBitmapRect.bottom;
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viewRect.bottom -= diff;
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bitmapRect.bottom = actualBitmapRect.bottom;
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}
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float xOffset = viewRect.left - (bitmapRect.left * xScale);
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float yOffset = viewRect.top - (bitmapRect.top * yScale);
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// source rendering buffer
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agg::rendering_buffer srcBuffer;
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srcBuffer.attach((uint8*)bitmap->Bits(),
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actualBitmapRect.IntegerWidth() + 1,
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actualBitmapRect.IntegerHeight() + 1,
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(uint32)actualBitmapRect.IntegerWidth() + 1,
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(uint32)actualBitmapRect.IntegerHeight() + 1,
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bitmap->BytesPerRow());
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agg::trans_affine srcMatrix;
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// srcMatrix *= agg::trans_affine_translation(-actualBitmapRect.left, -actualBitmapRect.top);
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srcMatrix *= agg::trans_affine_scaling(fScale, fScale);
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srcMatrix *= agg::trans_affine_translation(fOrigin.x, fOrigin.y);
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agg::trans_affine imgMatrix;
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imgMatrix *= agg::trans_affine_scaling(xScale, yScale);
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imgMatrix *= agg::trans_affine_translation(xOffset, yOffset);
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imgMatrix *= agg::trans_affine_scaling(fScale, fScale);
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imgMatrix *= agg::trans_affine_translation(fOrigin.x, fOrigin.y);
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imgMatrix.invert();
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span_alloc_type sa;
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interpolator_type interpolator(imgMatrix);
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span_gen_type sg(sa, srcBuffer, agg::rgba(0, 0, 0, 0), interpolator);
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image_renderer_type ri(*fBaseRenderer, sg);
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agg::rasterizer_scanline_aa<> pf;
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agg::scanline_u8 sl;
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// path encloses image
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agg::path_storage path;
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path.move_to(viewRect.left, viewRect.top);
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path.line_to(viewRect.right + 1, viewRect.top);
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path.line_to(viewRect.right + 1, viewRect.bottom + 1);
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path.line_to(viewRect.left, viewRect.bottom + 1);
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path.close_polygon();
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agg::conv_transform<agg::path_storage> tr(path, srcMatrix);
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pf.add_path(tr);
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agg::render_scanlines(pf, sl, ri);
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_DrawBitmap(srcBuffer, bitmap->ColorSpace(), actualBitmapRect, bitmapRect, viewRect);
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}
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}
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// DrawBitmap
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void
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Painter::DrawBitmap(const ServerBitmap* bitmap,
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BRect bitmapRect, BRect viewRect) const
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{
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if (bitmap && bitmap->InitCheck()) {
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// the native bitmap coordinate system
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BRect actualBitmapRect(bitmap->Bounds());
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agg::rendering_buffer srcBuffer;
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srcBuffer.attach(bitmap->Bits(),
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bitmap->Width(),
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bitmap->Height(),
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bitmap->BytesPerRow());
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_DrawBitmap(srcBuffer, bitmap->ColorSpace(), actualBitmapRect, bitmapRect, viewRect);
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}
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}
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// #pragma mark -
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// FillRegion
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void
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Painter::FillRegion(const BRegion* region, const pattern& p = B_SOLID_HIGH) const
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{
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BRegion copy(*region);
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int32 count = copy.CountRects();
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for (int32 i = 0; i < count; i++) {
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FillRect(copy.RectAt(i), p);
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}
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}
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// InvertRect
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void
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Painter::InvertRect(const BRect& r) const
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{
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BRegion region(r);
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if (fClippingRegion) {
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region.IntersectWith(fClippingRegion);
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}
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// implementation only for B_RGB32 at the moment
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int32 count = region.CountRects();
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for (int32 i = 0; i < count; i++) {
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BRect r = region.RectAt(i);
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_Transform(&r);
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_InvertRect32(r);
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}
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}
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// #pragma mark -
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// _MakeEmpty
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@ -761,6 +736,25 @@ Painter::_Transform(const float& width) const
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return w;
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}
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// _Transform
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void
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Painter::_Transform(BRect* rect) const
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{
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// TODO integrate this function more
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rect->right++;
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rect->bottom++;
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rect->left += fOrigin.x;
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rect->top += fOrigin.y;
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rect->right += fOrigin.x;
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rect->bottom += fOrigin.y;
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rect->left *= fScale;
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rect->top *= fScale;
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rect->right *= fScale;
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rect->bottom *= fScale;
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rect->right--;
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rect->bottom--;
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}
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// _RebuildClipping
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void
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Painter::_RebuildClipping()
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@ -776,16 +770,17 @@ Painter::_RebuildClipping()
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// though I was unable to figure out the difference
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BPoint lt(r.LeftTop());
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BPoint rb(r.RightBottom());
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rb += BPoint(1.0, 1.0);
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// _Transform(<, false);
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// _Transform(&rb, false);
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lt += fOrigin;
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lt.x *= fScale;
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lt.y *= fScale;
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rb += fOrigin;
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rb.x *= fScale;
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rb.y *= fScale;
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rb -= BPoint(1.0, 1.0);
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// offset to bottom right corner of pixel before transformation
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rb += BPoint(1.0, 1.0);
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// apply transformation
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lt += fOrigin;
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lt.x *= fScale;
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lt.y *= fScale;
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rb += fOrigin;
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rb.x *= fScale;
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rb.y *= fScale;
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// undo offset to bottom right corner after transformation
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rb -= BPoint(1.0, 1.0);
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// fBaseRenderer->add_clip_box(floorf(lt.x),
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// floorf(lt.y),
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// ceilf(rb.x),
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@ -927,7 +922,128 @@ Painter::_DrawPolygon(const BPoint* ptArray, int32 numPts,
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}
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}
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// _DrawBitmap
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void
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Painter::_DrawBitmap(const agg::rendering_buffer& srcBuffer, color_space format,
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BRect actualBitmapRect, BRect bitmapRect, BRect viewRect) const
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{
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switch (format) {
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case B_RGB32:
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case B_RGBA32:
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_DrawBitmap32(srcBuffer, actualBitmapRect, bitmapRect, viewRect);
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break;
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default:
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fprintf(stderr, "Painter::DrawBitmap() - unsupported colorspace: %d\n", format);
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break;
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}
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}
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// _DrawBitmap32
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void
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Painter::_DrawBitmap32(const agg::rendering_buffer& srcBuffer,
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BRect actualBitmapRect, BRect bitmapRect, BRect viewRect) const
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{
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typedef agg::span_allocator<agg::rgba8> span_alloc_type;
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typedef agg::span_interpolator_linear<> interpolator_type;
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typedef agg::span_image_filter_rgba32_nn<agg::order_bgra32,
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interpolator_type> span_gen_type;
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typedef agg::renderer_scanline_aa<renderer_base, span_gen_type> image_renderer_type;
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if (bitmapRect.IsValid() && bitmapRect.Intersects(actualBitmapRect)
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&& viewRect.IsValid()) {
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// compensate for the lefttop offset the actualBitmapRect might have
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// NOTE: I have no clue why enabling the next call gives a wrong result!
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// According to the BeBook, bitmapRect is supposed to be in native
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// bitmap space!
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// bitmapRect.OffsetBy(-actualBitmapRect.left, -actualBitmapRect.top);
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actualBitmapRect.OffsetBy(-actualBitmapRect.left, -actualBitmapRect.top);
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// calculate the scaling
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double xScale = (viewRect.Width() + 1) / (bitmapRect.Width() + 1);
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double yScale = (viewRect.Height() + 1) / (bitmapRect.Height() + 1);
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// constrain rect to passed bitmap bounds
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// and transfer the changes to the viewRect
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if (bitmapRect.left < actualBitmapRect.left) {
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float diff = actualBitmapRect.left - bitmapRect.left;
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viewRect.left += diff * xScale;
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bitmapRect.left = actualBitmapRect.left;
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}
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if (bitmapRect.top < actualBitmapRect.top) {
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float diff = actualBitmapRect.top - bitmapRect.top;
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viewRect.top += diff;
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bitmapRect.top = actualBitmapRect.top;
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}
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if (bitmapRect.right > actualBitmapRect.right) {
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float diff = bitmapRect.right - actualBitmapRect.right;
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viewRect.right -= diff;
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bitmapRect.right = actualBitmapRect.right;
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}
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if (bitmapRect.bottom > actualBitmapRect.bottom) {
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float diff = bitmapRect.right - actualBitmapRect.bottom;
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viewRect.bottom -= diff;
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bitmapRect.bottom = actualBitmapRect.bottom;
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}
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float xOffset = viewRect.left - (bitmapRect.left * xScale);
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float yOffset = viewRect.top - (bitmapRect.top * yScale);
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agg::trans_affine srcMatrix;
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// srcMatrix *= agg::trans_affine_translation(-actualBitmapRect.left, -actualBitmapRect.top);
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srcMatrix *= agg::trans_affine_scaling(fScale, fScale);
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srcMatrix *= agg::trans_affine_translation(fOrigin.x, fOrigin.y);
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agg::trans_affine imgMatrix;
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imgMatrix *= agg::trans_affine_scaling(xScale, yScale);
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imgMatrix *= agg::trans_affine_translation(xOffset, yOffset);
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imgMatrix *= agg::trans_affine_scaling(fScale, fScale);
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imgMatrix *= agg::trans_affine_translation(fOrigin.x, fOrigin.y);
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imgMatrix.invert();
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span_alloc_type sa;
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interpolator_type interpolator(imgMatrix);
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span_gen_type sg(sa, srcBuffer, agg::rgba(0, 0, 0, 0), interpolator);
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image_renderer_type ri(*fBaseRenderer, sg);
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agg::rasterizer_scanline_aa<> pf;
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agg::scanline_u8 sl;
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// path encloses image
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agg::path_storage path;
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path.move_to(viewRect.left, viewRect.top);
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path.line_to(viewRect.right + 1, viewRect.top);
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path.line_to(viewRect.right + 1, viewRect.bottom + 1);
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path.line_to(viewRect.left, viewRect.bottom + 1);
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path.close_polygon();
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agg::conv_transform<agg::path_storage> tr(path, srcMatrix);
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pf.add_path(tr);
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agg::render_scanlines(pf, sl, ri);
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}
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}
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// _InvertRect32
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void
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Painter::_InvertRect32(BRect r) const
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{
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if (fBuffer) {
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int32 width = r.IntegerWidth() + 1;
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for (int32 y = (int32)r.top; y <= (int32)r.bottom; y++) {
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uint8* dst = fBuffer->row(y);
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dst += (int32)r.left * 4;
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for (int32 i = 0; i < width; i++) {
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dst[0] = 255 - dst[0];
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dst[1] = 255 - dst[1];
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dst[2] = 255 - dst[2];
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dst += 4;
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}
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}
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}
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}
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// #pragma mark -
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