gecko/gfx/thebes/gfxPSSurface.cpp

108 lines
2.8 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gfxPSSurface.h"
#include "cairo.h"
#include "cairo-ps.h"
static cairo_status_t
write_func(void *closure, const unsigned char *data, unsigned int length)
{
nsCOMPtr<nsIOutputStream> out = reinterpret_cast<nsIOutputStream*>(closure);
do {
uint32_t wrote = 0;
if (NS_FAILED(out->Write((const char*)data, length, &wrote)))
break;
data += wrote; length -= wrote;
} while (length > 0);
NS_ASSERTION(length == 0, "not everything was written to the file");
return CAIRO_STATUS_SUCCESS;
}
gfxPSSurface::gfxPSSurface(nsIOutputStream *aStream, const gfxSize& aSizeInPoints, PageOrientation aOrientation)
: mStream(aStream), mXDPI(-1), mYDPI(-1), mOrientation(aOrientation)
{
mSize = mozilla::gfx::IntSize(aSizeInPoints.width, aSizeInPoints.height);
// The PS output does not specify the page size so to print
// landscape we need to rotate the drawing 90 degrees and print on
// portrait paper. If printing landscape, swap the width/height
// supplied to cairo to select a portrait print area. gfxContext
// will perform the rotation when GetRotateForLandscape() is TRUE.
mozilla::gfx::IntSize cairoSize;
if (mOrientation == PORTRAIT) {
cairoSize = mSize;
} else {
cairoSize = mozilla::gfx::IntSize(mSize.height, mSize.width);
}
cairo_surface_t* ps_surface = cairo_ps_surface_create_for_stream(write_func, (void*)mStream, cairoSize.width, cairoSize.height);
cairo_ps_surface_restrict_to_level(ps_surface, CAIRO_PS_LEVEL_2);
Init(ps_surface);
}
gfxPSSurface::~gfxPSSurface()
{
}
nsresult
gfxPSSurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
{
if (mOrientation == PORTRAIT) {
cairo_ps_surface_dsc_comment (mSurface, "%%Orientation: Portrait");
} else {
cairo_ps_surface_dsc_comment (mSurface, "%%Orientation: Landscape");
}
return NS_OK;
}
nsresult
gfxPSSurface::EndPrinting()
{
return NS_OK;
}
nsresult
gfxPSSurface::AbortPrinting()
{
return NS_OK;
}
nsresult
gfxPSSurface::BeginPage()
{
return NS_OK;
}
nsresult
gfxPSSurface::EndPage()
{
cairo_surface_show_page(CairoSurface());
return NS_OK;
}
void
gfxPSSurface::Finish()
{
gfxASurface::Finish();
mStream->Close();
}
void
gfxPSSurface::SetDPI(double xDPI, double yDPI)
{
mXDPI = xDPI;
mYDPI = yDPI;
cairo_surface_set_fallback_resolution(CairoSurface(), xDPI, yDPI);
}
void
gfxPSSurface::GetDPI(double *xDPI, double *yDPI)
{
*xDPI = mXDPI;
*yDPI = mYDPI;
}