gecko-dev/gfx/thebes/gfxOS2Surface.cpp

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7.3 KiB
C++

/* vim: set sw=4 sts=4 et cin: */
/* 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 "gfxOS2Surface.h"
#include <stdio.h>
/**********************************************************************
* class gfxOS2Surface
**********************************************************************/
gfxOS2Surface::gfxOS2Surface(const gfxIntSize& aSize,
gfxASurface::gfxImageFormat aImageFormat)
: mWnd(0), mSize(aSize)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::gfxOS2Surface(Size=%dx%d, %d)\n", (unsigned int)this,
aSize.width, aSize.height, aImageFormat);
#endif
// in this case we don't have a window, so we create a memory presentation
// space to construct the cairo surface on
// create a PS, partly taken from nsOffscreenSurface::Init(), i.e. nsDrawingSurfaceOS2.cpp
DEVOPENSTRUC dop = { 0, 0, 0, 0, 0 };
SIZEL sizel = { 0, 0 }; // use same page size as device
mDC = DevOpenDC(0, OD_MEMORY, (PSZ)"*", 5, (PDEVOPENDATA)&dop, NULLHANDLE);
NS_ASSERTION(mDC != DEV_ERROR, "Could not create memory DC");
mPS = GpiCreatePS(0, mDC, &sizel, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
NS_ASSERTION(mPS != GPI_ERROR, "Could not create PS on memory DC!");
// now create a bitmap of the right size
BITMAPINFOHEADER2 hdr = { 0 };
hdr.cbFix = sizeof(BITMAPINFOHEADER2);
hdr.cx = mSize.width;
hdr.cy = mSize.height;
hdr.cPlanes = 1;
// find bit depth
LONG lBitCount = 0;
DevQueryCaps(mDC, CAPS_COLOR_BITCOUNT, 1, &lBitCount);
hdr.cBitCount = (USHORT)lBitCount;
mBitmap = GpiCreateBitmap(mPS, &hdr, 0, 0, 0);
NS_ASSERTION(mBitmap != GPI_ERROR, "Could not create bitmap in memory!");
// set final stats & select bitmap into PS
GpiSetBitmap(mPS, mBitmap);
// now we can finally create the cairo surface on the in-memory PS
cairo_surface_t *surf = cairo_os2_surface_create(mPS, mSize.width, mSize.height);
#ifdef DEBUG_thebes_2
printf(" type(%#x)=%d (ID=%#x, h/w=%d/%d)\n", (unsigned int)surf,
cairo_surface_get_type(surf), (unsigned int)mPS, mSize.width, mSize.height);
#endif
// Normally, OS/2 cairo surfaces have to be forced to redraw completely
// by calling cairo_surface_mark_dirty(surf), but Mozilla paints them in
// full, so that is not necessary here.
// manual refresh is done from nsWindow::OnPaint
cairo_os2_surface_set_manual_window_refresh(surf, 1);
Init(surf);
}
gfxOS2Surface::gfxOS2Surface(HWND aWnd)
: mWnd(aWnd), mDC(nullptr), mPS(nullptr), mBitmap(nullptr)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::gfxOS2Surface(HWND=%#x)\n", (unsigned int)this,
(unsigned int)aWnd);
#endif
RECTL rectl;
WinQueryWindowRect(aWnd, &rectl);
mSize.width = rectl.xRight - rectl.xLeft;
mSize.height = rectl.yTop - rectl.yBottom;
if (mSize.width == 0) mSize.width = 1; // fake a minimal surface area to let
if (mSize.height == 0) mSize.height = 1; // cairo_os2_surface_create() return something
// This variation on cairo_os2_surface_create() avoids creating a
// persistent HPS that may never be used. It also enables manual
// refresh so nsWindow::OnPaint() controls when the screen is updated.
cairo_surface_t *surf =
cairo_os2_surface_create_for_window(mWnd, mSize.width, mSize.height);
#ifdef DEBUG_thebes_2
printf(" type(%#x)=%d (ID=%#x, h/w=%d/%d)\n", (unsigned int)surf,
cairo_surface_get_type(surf), (unsigned int)mPS, mSize.width, mSize.height);
#endif
Init(surf);
}
gfxOS2Surface::gfxOS2Surface(HDC aDC, const gfxIntSize& aSize)
: mWnd(0), mDC(aDC), mBitmap(nullptr), mSize(aSize)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::gfxOS2Surface(HDC=%#x, Size=%dx%d)\n", (unsigned int)this,
(unsigned int)aDC, aSize.width, aSize.height);
#endif
SIZEL sizel = { 0, 0 }; // use same page size as device
mPS = GpiCreatePS(0, mDC, &sizel, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
NS_ASSERTION(mPS != GPI_ERROR, "Could not create PS on print DC!");
// now create a bitmap of the right size
BITMAPINFOHEADER2 hdr = { 0 };
hdr.cbFix = sizeof(BITMAPINFOHEADER2);
hdr.cx = mSize.width;
hdr.cy = mSize.height;
hdr.cPlanes = 1;
// find bit depth
LONG lBitCount = 0;
DevQueryCaps(mDC, CAPS_COLOR_BITCOUNT, 1, &lBitCount);
hdr.cBitCount = (USHORT)lBitCount;
mBitmap = GpiCreateBitmap(mPS, &hdr, 0, 0, 0);
NS_ASSERTION(mBitmap != GPI_ERROR, "Could not create bitmap for printer!");
// set final stats & select bitmap into PS
GpiSetBitmap(mPS, mBitmap);
// now we can finally create the cairo surface on the in-memory PS
cairo_surface_t *surf = cairo_os2_surface_create(mPS, mSize.width, mSize.height);
#ifdef DEBUG_thebes_2
printf(" type(%#x)=%d (ID=%#x, h/w=%d/%d)\n", (unsigned int)surf,
cairo_surface_get_type(surf), (unsigned int)mPS, mSize.width, mSize.height);
#endif
// Normally, OS/2 cairo surfaces have to be forced to redraw completely
// by calling cairo_surface_mark_dirty(surf), but Mozilla paints them in
// full, so that is not necessary here.
Init(surf);
}
gfxOS2Surface::~gfxOS2Surface()
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::~gfxOS2Surface()\n", (unsigned int)this);
#endif
// Surfaces connected to a window were created using WinGetPS so we should
// release it again with WinReleasePS. Memory or printer surfaces on the
// other hand were created on device contexts with the GPI functions, so
// use those to clean up stuff.
if (mWnd) {
if (mPS) {
WinReleasePS(mPS);
}
} else {
if (mBitmap) {
GpiSetBitmap(mPS, NULL);
GpiDeleteBitmap(mBitmap);
}
if (mPS) {
GpiDestroyPS(mPS);
}
if (mDC) {
DevCloseDC(mDC);
}
}
}
void gfxOS2Surface::Refresh(RECTL *aRect, HPS aPS)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::Refresh(x=%ld,%ld/y=%ld,%ld, HPS=%#x), mPS=%#x\n",
(unsigned int)this,
aRect->xLeft, aRect->xRight, aRect->yBottom, aRect->yTop,
(unsigned int)aPS, (unsigned int)mPS);
#endif
cairo_os2_surface_refresh_window(CairoSurface(), (aPS ? aPS : mPS), aRect);
}
int gfxOS2Surface::Resize(const gfxIntSize& aSize)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::Resize(%dx%d)\n", (unsigned int)this,
aSize.width, aSize.height);
#endif
mSize = aSize; // record the new size
// hardcode mutex timeout to 50ms for now
return cairo_os2_surface_set_size(CairoSurface(), mSize.width, mSize.height, 50);
}
HPS gfxOS2Surface::GetPS()
{
// Creating an HPS on-the-fly should never be needed because GetPS()
// is only called for printing surfaces & mPS should only be null for
// window surfaces. It would be a bug if Cairo had an HPS but Thebes
// didn't, but we'll check anyway to avoid leakage. As a last resort,
// if this is a window surface we'll create one & hang on to it.
if (!mPS) {
cairo_os2_surface_get_hps(CairoSurface(), &mPS);
if (!mPS && mWnd) {
mPS = WinGetPS(mWnd);
cairo_os2_surface_set_hps(CairoSurface(), mPS);
}
}
return mPS;
}