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