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Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-os2-surface.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/cairo-os2-surface.c | 1416 |
1 files changed, 1416 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-os2-surface.c b/libs/cairo-1.16.0/src/cairo-os2-surface.c new file mode 100644 index 0000000..84f08c8 --- /dev/null +++ b/libs/cairo-1.16.0/src/cairo-os2-surface.c @@ -0,0 +1,1416 @@ +/* vim: set sw=4 sts=4 et cin: */ +/* cairo - a vector graphics library with display and print output + * + * Copyright (c) 2005-2006 netlabs.org + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is + * Doodle <doodle@scenergy.dfmk.hu> + * + * Contributor(s): + * Peter Weilbacher <mozilla@Weilbacher.org> + * Rich Walsh <dragtext@e-vertise.com> + */ + +#include "cairoint.h" + +#include "cairo-os2-private.h" +#include "cairo-default-context-private.h" +#include "cairo-error-private.h" +#include "cairo-surface-fallback-private.h" +#include "cairo-image-surface-private.h" + +#if CAIRO_HAS_FC_FONT +#include <fontconfig/fontconfig.h> +#endif + +#include <float.h> +#ifdef BUILD_CAIRO_DLL +# include "cairo-os2.h" +# ifndef __WATCOMC__ +# include <emx/startup.h> +# endif +#endif + +/* + * Here comes the extra API for the OS/2 platform. Currently it consists + * of two extra functions, the cairo_os2_init() and the + * cairo_os2_fini(). Both of them are called automatically if + * Cairo is compiled to be a DLL file, but you have to call them before + * using the Cairo API if you link to Cairo statically! + * + * You'll also find the code in here which deals with DLL initialization + * and termination, if the code is built to be a DLL. + * (if BUILD_CAIRO_DLL is defined) + */ + +/* Initialization counter: */ +static int cairo_os2_initialization_count = 0; + +static inline void +DisableFPUException (void) +{ + unsigned short usCW; + + /* Some OS/2 PM API calls modify the FPU Control Word, + * but forget to restore it. + * + * This can result in XCPT_FLOAT_INVALID_OPCODE exceptions, + * so to be sure, we disable Invalid Opcode FPU exception + * before using FPU stuffs. + */ + usCW = _control87 (0, 0); + usCW = usCW | EM_INVALID | 0x80; + _control87 (usCW, MCW_EM | 0x80); +} + +/** + * cairo_os2_init: + * + * Initializes the Cairo library. This function is automatically called if + * Cairo was compiled to be a DLL (however it's not a problem if it's called + * multiple times). But if you link to Cairo statically, you have to call it + * once to set up Cairo's internal structures and mutexes. + * + * Since: 1.4 + **/ +cairo_public void +cairo_os2_init (void) +{ + /* This may initialize some stuffs, like create mutex semaphores etc.. */ + + cairo_os2_initialization_count++; + if (cairo_os2_initialization_count > 1) return; + + DisableFPUException (); + +#if CAIRO_HAS_FC_FONT + /* Initialize FontConfig */ + FcInit (); +#endif + + CAIRO_MUTEX_INITIALIZE (); +} + +/** + * cairo_os2_fini: + * + * Uninitializes the Cairo library. This function is automatically called if + * Cairo was compiled to be a DLL (however it's not a problem if it's called + * multiple times). But if you link to Cairo statically, you have to call it + * once to shut down Cairo, to let it free all the resources it has allocated. + * + * Since: 1.4 + **/ +cairo_public void +cairo_os2_fini (void) +{ + /* This has to uninitialize some stuffs, like destroy mutex semaphores etc.. */ + + if (cairo_os2_initialization_count <= 0) return; + cairo_os2_initialization_count--; + if (cairo_os2_initialization_count > 0) return; + + DisableFPUException (); + + cairo_debug_reset_static_data (); + +#if CAIRO_HAS_FC_FONT +# if HAVE_FCFINI + /* Uninitialize FontConfig */ + FcFini (); +# endif +#endif + +#ifdef __WATCOMC__ + /* It can happen that the libraries we use have memory leaks, + * so there are still memory chunks allocated at this point. + * In these cases, Watcom might still have a bigger memory chunk, + * called "the heap" allocated from the OS. + * As we want to minimize the memory we lose from the point of + * view of the OS, we call this function to shrink that heap + * as much as possible. + */ + _heapshrink (); +#else + /* GCC has a heapmin function that approximately corresponds to + * what the Watcom function does + */ + _heapmin (); +#endif +} + +/* + * This function calls the allocation function depending on which + * method was compiled into the library: it can be native allocation + * (DosAllocMem/DosFreeMem) or C-Library based allocation (malloc/free). + * Actually, for pixel buffers that we use this function for, cairo + * uses _cairo_malloc_abc, so we use that here, too. And use the + * change to check the size argument + */ +void *_buffer_alloc (size_t a, size_t b, const unsigned int size) +{ + size_t nbytes; + void *buffer = NULL; + + if (!a || !b || !size || + a >= INT32_MAX / b || a*b >= INT32_MAX / size) { + return NULL; + } + nbytes = a * b * size; + +#ifdef OS2_USE_PLATFORM_ALLOC + /* Using OBJ_ANY on a machine that isn't configured for hi-mem + * will cause ERROR_INVALID_PARAMETER. If this occurs, or this + * build doesn't have hi-mem enabled, fall back to using lo-mem. + */ +#ifdef OS2_HIGH_MEMORY + if (!DosAllocMem (&buffer, nbytes, + OBJ_ANY | PAG_READ | PAG_WRITE | PAG_COMMIT)) + return buffer; +#endif + if (DosAllocMem (&buffer, nbytes, + PAG_READ | PAG_WRITE | PAG_COMMIT)) + return NULL; +#else + /* Clear the malloc'd buffer the way DosAllocMem() does. */ + buffer = _cairo_malloc (nbytes); + if (buffer) { + memset (buffer, 0, nbytes); + } +#endif + return buffer; +} + +/* + * This function selects the free function depending on which + * allocation method was compiled into the library + */ +void _buffer_free (void *buffer) +{ +#ifdef OS2_USE_PLATFORM_ALLOC + DosFreeMem (buffer); +#else + free (buffer); +#endif +} + +/* XXX + * The cairo_os2_ini() and cairo_os2_fini() functions should be removed and + * the LibMain code moved to cairo-system.c. It should also call + * cairo_debug_reset_static_data() instead of duplicating its logic... + */ + +#ifdef BUILD_CAIRO_DLL +/* The main DLL entry for DLL initialization and uninitialization */ +/* Only include this code if we're about to build a DLL. */ + +#ifdef __WATCOMC__ +unsigned _System +LibMain (unsigned hmod, + unsigned termination) +#else +unsigned long _System +_DLL_InitTerm (unsigned long hModule, + unsigned long termination) +#endif +{ + if (termination) { + /* Unloading the DLL */ + cairo_os2_fini (); + +#ifndef __WATCOMC__ + /* Uninitialize RTL of GCC */ + __ctordtorTerm (); + _CRT_term (); +#endif + return 1; + } else { + /* Loading the DLL */ +#ifndef __WATCOMC__ + /* Initialize RTL of GCC */ + if (_CRT_init () != 0) + return 0; + __ctordtorInit (); +#endif + + cairo_os2_init (); + return 1; + } +} + +#endif /* BUILD_CAIRO_DLL */ + +/* + * The following part of the source file contains the code which might + * be called the "core" of the OS/2 backend support. This contains the + * OS/2 surface support functions and structures. + */ + +/* Forward declaration */ +static const cairo_surface_backend_t cairo_os2_surface_backend; + +/* Unpublished API: + * GpiEnableYInversion = PMGPI.723 + * GpiQueryYInversion = PMGPI.726 + * BOOL APIENTRY GpiEnableYInversion (HPS hps, LONG lHeight); + * LONG APIENTRY GpiQueryYInversion (HPS hps); + */ +BOOL APIENTRY GpiEnableYInversion (HPS hps, LONG lHeight); +LONG APIENTRY GpiQueryYInversion (HPS hps); + +#ifdef __WATCOMC__ +/* Function declaration for GpiDrawBits () (missing from OpenWatcom headers) */ +LONG APIENTRY GpiDrawBits (HPS hps, + PVOID pBits, + PBITMAPINFO2 pbmiInfoTable, + LONG lCount, + PPOINTL aptlPoints, + LONG lRop, + ULONG flOptions); +#endif + +static void +_cairo_os2_surface_blit_pixels (cairo_os2_surface_t *surface, + HPS hps_begin_paint, + PRECTL prcl_begin_paint_rect) +{ + POINTL aptlPoints[4]; + LONG lOldYInversion; + LONG rc = GPI_OK; + + /* Check the limits (may not be necessary) */ + if (prcl_begin_paint_rect->xLeft < 0) + prcl_begin_paint_rect->xLeft = 0; + if (prcl_begin_paint_rect->yBottom < 0) + prcl_begin_paint_rect->yBottom = 0; + if (prcl_begin_paint_rect->xRight > (LONG) surface->bitmap_info.cx) + prcl_begin_paint_rect->xRight = (LONG) surface->bitmap_info.cx; + if (prcl_begin_paint_rect->yTop > (LONG) surface->bitmap_info.cy) + prcl_begin_paint_rect->yTop = (LONG) surface->bitmap_info.cy; + + /* Exit if the rectangle is empty */ + if (prcl_begin_paint_rect->xLeft >= prcl_begin_paint_rect->xRight || + prcl_begin_paint_rect->yBottom >= prcl_begin_paint_rect->yTop) + return; + + /* Set the Target & Source coordinates */ + *((PRECTL)&aptlPoints[0]) = *prcl_begin_paint_rect; + *((PRECTL)&aptlPoints[2]) = *prcl_begin_paint_rect; + + /* Make the Target coordinates non-inclusive */ + aptlPoints[1].x -= 1; + aptlPoints[1].y -= 1; + + /* Enable Y Inversion for the HPS, so GpiDrawBits will + * work with upside-top image, not with upside-down image! + */ + lOldYInversion = GpiQueryYInversion (hps_begin_paint); + GpiEnableYInversion (hps_begin_paint, surface->bitmap_info.cy-1); + + /* Debug code to draw rectangle limits */ +#if 0 + { + int x, y; + unsigned char *pixels; + + pixels = surface->pixels; + for (x = 0; x < surface->bitmap_info.cx; x++) { + for (y = 0; y < surface->bitmap_info.cy; y++) { + if ((x == 0) || + (y == 0) || + (x == y) || + (x >= surface->bitmap_info.cx-1) || + (y >= surface->bitmap_info.cy-1)) + { + pixels[y*surface->bitmap_info.cx*4+x*4] = 255; + } + } + } + } +#endif + if (!surface->use_24bpp) { + rc = GpiDrawBits (hps_begin_paint, + surface->pixels, + &(surface->bitmap_info), + 4, + aptlPoints, + ROP_SRCCOPY, + BBO_IGNORE); + if (rc != GPI_OK) + surface->use_24bpp = TRUE; + } + + if (surface->use_24bpp) { + /* If GpiDrawBits () failed then this is most likely because the + * display driver could not handle a 32bit bitmap. So we need to + * - create a buffer that only contains 3 bytes per pixel + * - change the bitmap info header to contain 24bit + * - pass the new buffer to GpiDrawBits () again + * - clean up the new buffer + */ + BITMAPINFO2 bmpinfo; + unsigned char *pchPixBuf; + unsigned char *pchTarget; + ULONG *pulSource; + ULONG ulX; + ULONG ulY; + ULONG ulPad; + + /* Set up the bitmap header, but this time for 24bit depth. */ + bmpinfo = surface->bitmap_info; + bmpinfo.cBitCount = 24; + + /* The start of each row has to be DWORD aligned. Calculate the + * of number aligned bytes per row, the total size of the bitmap, + * and the number of padding bytes at the end of each row. + */ + ulX = (((bmpinfo.cx * bmpinfo.cBitCount) + 31) / 32) * 4; + bmpinfo.cbImage = ulX * bmpinfo.cy; + ulPad = ulX - bmpinfo.cx * 3; + + /* Allocate temporary pixel buffer. If the rows don't need + * padding, it has to be 1 byte larger than the size of the + * bitmap or else the high-order byte from the last source + * row will end up in unallocated memory. + */ + pchPixBuf = (unsigned char *)_buffer_alloc (1, 1, + bmpinfo.cbImage + (ulPad ? 0 : 1)); + + if (pchPixBuf) { + /* Copy 4 bytes from the source but advance the target ptr only + * 3 bytes, so the high-order alpha byte will be overwritten by + * the next copy. At the end of each row, skip over the padding. + */ + pchTarget = pchPixBuf; + pulSource = (ULONG*)surface->pixels; + for (ulY = bmpinfo.cy; ulY; ulY--) { + for (ulX = bmpinfo.cx; ulX; ulX--) { + *((ULONG*)pchTarget) = *pulSource++; + pchTarget += 3; + } + pchTarget += ulPad; + } + + rc = GpiDrawBits (hps_begin_paint, + pchPixBuf, + &bmpinfo, + 4, + aptlPoints, + ROP_SRCCOPY, + BBO_IGNORE); + if (rc != GPI_OK) + surface->use_24bpp = FALSE; + + _buffer_free (pchPixBuf); + } + } + + /* Restore Y inversion */ + GpiEnableYInversion (hps_begin_paint, lOldYInversion); +} + +static void +_cairo_os2_surface_get_pixels_from_screen (cairo_os2_surface_t *surface, + HPS hps_begin_paint, + PRECTL prcl_begin_paint_rect) +{ + HPS hps; + HDC hdc; + SIZEL sizlTemp; + HBITMAP hbmpTemp; + BITMAPINFO2 bmi2Temp; + POINTL aptlPoints[4]; + int y; + unsigned char *pchTemp; + + /* To copy pixels from screen to our buffer, we do the following steps: + * + * - Blit pixels from screen to a HBITMAP: + * -- Create Memory Device Context + * -- Create a PS into it + * -- Create a HBITMAP + * -- Select HBITMAP into memory PS + * -- Blit dirty pixels from screen to HBITMAP + * - Copy HBITMAP lines (pixels) into our buffer + * - Free resources + */ + + /* Create a memory device context */ + hdc = DevOpenDC (0, OD_MEMORY,"*",0L, NULL, NULLHANDLE); + if (!hdc) { + return; + } + + /* Create a memory PS */ + sizlTemp.cx = prcl_begin_paint_rect->xRight - prcl_begin_paint_rect->xLeft; + sizlTemp.cy = prcl_begin_paint_rect->yTop - prcl_begin_paint_rect->yBottom; + hps = GpiCreatePS (0, + hdc, + &sizlTemp, + PU_PELS | GPIT_NORMAL | GPIA_ASSOC); + if (!hps) { + DevCloseDC (hdc); + return; + } + + /* Create an uninitialized bitmap. */ + /* Prepare BITMAPINFO2 structure for our buffer */ + memset (&bmi2Temp, 0, sizeof (bmi2Temp)); + bmi2Temp.cbFix = sizeof (BITMAPINFOHEADER2); + bmi2Temp.cx = sizlTemp.cx; + bmi2Temp.cy = sizlTemp.cy; + bmi2Temp.cPlanes = 1; + bmi2Temp.cBitCount = 32; + + hbmpTemp = GpiCreateBitmap (hps, + (PBITMAPINFOHEADER2) &bmi2Temp, + 0, + NULL, + NULL); + + if (!hbmpTemp) { + GpiDestroyPS (hps); + DevCloseDC (hdc); + return; + } + + /* Select the bitmap into the memory device context. */ + GpiSetBitmap (hps, hbmpTemp); + + /* Target coordinates (Noninclusive) */ + aptlPoints[0].x = 0; + aptlPoints[0].y = 0; + + aptlPoints[1].x = sizlTemp.cx; + aptlPoints[1].y = sizlTemp.cy; + + /* Source coordinates (Inclusive) */ + aptlPoints[2].x = prcl_begin_paint_rect->xLeft; + aptlPoints[2].y = surface->bitmap_info.cy - prcl_begin_paint_rect->yBottom; + + aptlPoints[3].x = prcl_begin_paint_rect->xRight; + aptlPoints[3].y = surface->bitmap_info.cy - prcl_begin_paint_rect->yTop; + + /* Blit pixels from screen to bitmap */ + GpiBitBlt (hps, + hps_begin_paint, + 4, + aptlPoints, + ROP_SRCCOPY, + BBO_IGNORE); + + /* Now we have to extract the pixels from the bitmap. */ + pchTemp = + surface->pixels + + (prcl_begin_paint_rect->yBottom)*surface->bitmap_info.cx*4 + + prcl_begin_paint_rect->xLeft*4; + for (y = 0; y < sizlTemp.cy; y++) { + /* Get one line of pixels */ + GpiQueryBitmapBits (hps, + sizlTemp.cy - y - 1, /* lScanStart */ + 1, /* lScans */ + (PBYTE)pchTemp, + &bmi2Temp); + + /* Go for next line */ + pchTemp += surface->bitmap_info.cx*4; + } + + /* Clean up resources */ + GpiSetBitmap (hps, (HBITMAP) NULL); + GpiDeleteBitmap (hbmpTemp); + GpiDestroyPS (hps); + DevCloseDC (hdc); +} + +static cairo_status_t +_cairo_os2_surface_acquire_source_image (void *abstract_surface, + cairo_image_surface_t **image_out, + void **image_extra) +{ + cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface; + + DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT); + + /* Increase lend counter */ + surface->pixel_array_lend_count++; + + *image_out = surface->image_surface; + *image_extra = NULL; + + DosReleaseMutexSem (surface->hmtx_use_private_fields); + + return CAIRO_STATUS_SUCCESS; +} + +static void +_cairo_os2_surface_release_source_image (void *abstract_surface, + cairo_image_surface_t *image, + void *image_extra) +{ + cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface; + + /* Decrease Lend counter! */ + DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT); + + if (surface->pixel_array_lend_count > 0) + surface->pixel_array_lend_count--; + DosPostEventSem (surface->hev_pixel_array_came_back); + + DosReleaseMutexSem (surface->hmtx_use_private_fields); +} + +static cairo_image_surface_t * +_cairo_os2_surface_map_to_image (void *abstract_surface, + const cairo_rectangle_int_t *extents) +{ + cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface; + + DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT); + /* Increase lend counter */ + surface->pixel_array_lend_count++; + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); + + /* XXX: BROKEN! */ + *image_out = _cairo_surface_create_for_rectangle_int (surface->image_surface, + extents); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_int_status_t +_cairo_os2_surface_unmap_image (void *abstract_surface, + cairo_image_surface_t *image) +{ + cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface; + + /* So, we got back the image, and if all goes well, then + * something has been changed inside the interest_rect. + * So, we blit it to the screen! + */ + if (surface->blit_as_changes) { + RECTL rclToBlit; + + /* Get mutex, we'll work with the pixel array! */ + if (DosRequestMutexSem (surface->hmtx_use_private_fields, + SEM_INDEFINITE_WAIT) != NO_ERROR) + { + /* Could not get mutex! */ + return; + } + + rclToBlit.xLeft = image->base.device_transform_inverse.x0; + rclToBlit.xRight = rclToBlit.xLeft + image->width; /* Noninclusive */ + rclToBlit.yTop = image->base.device_transform_inverse.y0; + rclToBlit.yBottom = rclToBlit.yTop + image->height; /* Noninclusive */ + + if (surface->hwnd_client_window) { + /* We know the HWND, so let's invalidate the window region, + * so the application will redraw itself, using the + * cairo_os2_surface_refresh_window () API from its own PM thread. + * + * This is the safe method, which should be preferred every time. + */ + rclToBlit.yTop = surface->bitmap_info.cy - rclToBlit.yTop; + rclToBlit.yBottom = surface->bitmap_info.cy - rclToBlit.yTop; + WinInvalidateRect (surface->hwnd_client_window, + &rclToBlit, + FALSE); + } else { + /* We don't know the HWND, so try to blit the pixels from here! + * Please note that it can be problematic if this is not the PM thread! + * + * It can cause internal PM stuffs to be screwed up, for some reason. + * Please always tell the HWND to the surface using the + * cairo_os2_surface_set_hwnd () API, and call cairo_os2_surface_refresh_window () + * from your WM_PAINT, if it's possible! + */ + _cairo_os2_surface_blit_pixels (surface, + surface->hps_client_window, + &rclToBlit); + } + + DosReleaseMutexSem (surface->hmtx_use_private_fields); + } + /* Also decrease Lend counter! */ + DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT); + + if (surface->pixel_array_lend_count > 0) + surface->pixel_array_lend_count--; + DosPostEventSem (surface->hev_pixel_array_came_back); + + DosReleaseMutexSem (surface->hmtx_use_private_fields); +} + +static cairo_bool_t +_cairo_os2_surface_get_extents (void *abstract_surface, + cairo_rectangle_int_t *rectangle) +{ + cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface; + + rectangle->x = 0; + rectangle->y = 0; + rectangle->width = surface->bitmap_info.cx; + rectangle->height = surface->bitmap_info.cy; + + return TRUE; +} + +/** + * cairo_os2_surface_create: + * @hps_client_window: the presentation handle to bind the surface to + * @width: the width of the surface + * @height: the height of the surface + * + * Create a Cairo surface which is bound to a given presentation space (HPS). + * The caller retains ownership of the HPS and must dispose of it after the + * the surface has been destroyed. The surface will be created to have the + * given size. By default every change to the surface will be made visible + * immediately by blitting it into the window. This can be changed with + * cairo_os2_surface_set_manual_window_refresh(). + * Note that the surface will contain garbage when created, so the pixels + * have to be initialized by hand first. You can use the Cairo functions to + * fill it with black, or use cairo_surface_mark_dirty() to fill the surface + * with pixels from the window/HPS. + * + * Return value: the newly created surface + * + * Since: 1.4 + **/ +cairo_surface_t * +cairo_os2_surface_create (HPS hps_client_window, + int width, + int height) +{ + cairo_os2_surface_t *local_os2_surface = 0; + cairo_status_t status; + int rc; + + /* Check the size of the window */ + if ((width <= 0) || (height <= 0)) { + status = _cairo_error (CAIRO_STATUS_INVALID_SIZE); + goto error_exit; + } + + /* Allocate an OS/2 surface structure. */ + local_os2_surface = (cairo_os2_surface_t *) _cairo_malloc (sizeof (cairo_os2_surface_t)); + if (!local_os2_surface) { + status = _cairo_error (CAIRO_STATUS_NO_MEMORY); + goto error_exit; + } + + memset(local_os2_surface, 0, sizeof(cairo_os2_surface_t)); + + /* Allocate resources: mutex & event semaphores and the pixel buffer */ + if (DosCreateMutexSem (NULL, + &(local_os2_surface->hmtx_use_private_fields), + 0, + FALSE)) + { + status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR); + goto error_exit; + } + + if (DosCreateEventSem (NULL, + &(local_os2_surface->hev_pixel_array_came_back), + 0, + FALSE)) + { + status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR); + goto error_exit; + } + + local_os2_surface->pixels = (unsigned char *) _buffer_alloc (height, width, 4); + if (!local_os2_surface->pixels) { + status = _cairo_error (CAIRO_STATUS_NO_MEMORY); + goto error_exit; + } + + /* Create image surface from pixel array */ + local_os2_surface->image_surface = (cairo_image_surface_t *) + cairo_image_surface_create_for_data (local_os2_surface->pixels, + CAIRO_FORMAT_ARGB32, + width, /* Width */ + height, /* Height */ + width * 4); /* Rowstride */ + status = local_os2_surface->image_surface->base.status; + if (status) + goto error_exit; + + /* Set values for OS/2-specific data that aren't zero/NULL/FALSE. + * Note: hps_client_window may be null if this was called by + * cairo_os2_surface_create_for_window(). + */ + local_os2_surface->hps_client_window = hps_client_window; + local_os2_surface->blit_as_changes = TRUE; + + /* Prepare BITMAPINFO2 structure for our buffer */ + local_os2_surface->bitmap_info.cbFix = sizeof (BITMAPINFOHEADER2); + local_os2_surface->bitmap_info.cx = width; + local_os2_surface->bitmap_info.cy = height; + local_os2_surface->bitmap_info.cPlanes = 1; + local_os2_surface->bitmap_info.cBitCount = 32; + + /* Initialize base surface */ + _cairo_surface_init (&local_os2_surface->base, + &cairo_os2_surface_backend, + NULL, /* device */ + _cairo_content_from_format (CAIRO_FORMAT_ARGB32), + FALSE); /* is_vector */ + + /* Successful exit */ + return (cairo_surface_t *)local_os2_surface; + + error_exit: + + /* This point will only be reached if an error occurred */ + + if (local_os2_surface) { + if (local_os2_surface->pixels) + _buffer_free (local_os2_surface->pixels); + if (local_os2_surface->hev_pixel_array_came_back) + DosCloseEventSem (local_os2_surface->hev_pixel_array_came_back); + if (local_os2_surface->hmtx_use_private_fields) + DosCloseMutexSem (local_os2_surface->hmtx_use_private_fields); + free (local_os2_surface); + } + + return _cairo_surface_create_in_error (status); +} + +/** + * cairo_os2_surface_create_for_window: + * @hwnd_client_window: the window handle to bind the surface to + * @width: the width of the surface + * @height: the height of the surface + * + * Create a Cairo surface which is bound to a given window; the caller retains + * ownership of the window. This is a convenience function for use with + * windows that will only be updated when cairo_os2_surface_refresh_window() + * is called (usually in response to a WM_PAINT message). It avoids the need + * to create a persistent HPS for every window and assumes that one will be + * supplied by the caller when a cairo function needs one. If it isn't, an + * HPS will be created on-the-fly and released before the function which needs + * it returns. + * + * Return value: the newly created surface + * + * Since: 1.10 + **/ +cairo_surface_t * +cairo_os2_surface_create_for_window (HWND hwnd_client_window, + int width, + int height) +{ + cairo_os2_surface_t *local_os2_surface; + + /* A window handle must be provided. */ + if (!hwnd_client_window) { + return _cairo_surface_create_in_error ( + _cairo_error (CAIRO_STATUS_NO_MEMORY)); + } + + /* Create the surface. */ + local_os2_surface = (cairo_os2_surface_t *) + cairo_os2_surface_create (0, width, height); + + /* If successful, save the hwnd & turn off automatic repainting. */ + if (!local_os2_surface->image_surface->base.status) { + local_os2_surface->hwnd_client_window = hwnd_client_window; + local_os2_surface->blit_as_changes = FALSE; + } + + return (cairo_surface_t *)local_os2_surface; +} + +/** + * cairo_os2_surface_set_size: + * @surface: the cairo surface to resize + * @new_width: the new width of the surface + * @new_height: the new height of the surface + * @timeout: timeout value in milliseconds + * + * When the client window is resized, call this API to set the new size in the + * underlying surface accordingly. This function will reallocate everything, + * so you'll have to redraw everything in the surface after this call. + * The surface will contain garbage after the resizing. So the notes of + * cairo_os2_surface_create() apply here, too. + * + * The timeout value specifies how long the function should wait on other parts + * of the program to release the buffers. It is necessary, because it can happen + * that Cairo is just drawing something into the surface while we want to + * destroy and recreate it. + * + * Return value: %CAIRO_STATUS_SUCCESS if the surface could be resized, + * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface, + * %CAIRO_STATUS_INVALID_SIZE for invalid sizes + * %CAIRO_STATUS_NO_MEMORY if the new size could not be allocated, or if the + * timeout happened before all the buffers were released + * + * Since: 1.4 + **/ +int +cairo_os2_surface_set_size (cairo_surface_t *surface, + int new_width, + int new_height, + int timeout) +{ + cairo_os2_surface_t *local_os2_surface; + unsigned char *pchNewPixels; + int rc; + cairo_image_surface_t *pNewImageSurface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH); + } + + if ((new_width <= 0) || + (new_height <= 0)) + { + /* Invalid size! */ + return _cairo_error (CAIRO_STATUS_INVALID_SIZE); + } + + /* Allocate memory for new stuffs */ + pchNewPixels = (unsigned char *) _buffer_alloc (new_height, new_width, 4); + if (!pchNewPixels) { + /* Not enough memory for the pixels! + * Everything remains the same! + */ + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + + /* Create image surface from new pixel array */ + pNewImageSurface = (cairo_image_surface_t *) + cairo_image_surface_create_for_data (pchNewPixels, + CAIRO_FORMAT_ARGB32, + new_width, /* Width */ + new_height, /* Height */ + new_width * 4); /* Rowstride */ + + if (pNewImageSurface->base.status) { + /* Could not create image surface! + * Everything remains the same! + */ + _buffer_free (pchNewPixels); + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + + /* Okay, new memory allocated, so it's time to swap old buffers + * to new ones! + */ + if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)!=NO_ERROR) { + /* Could not get mutex! + * Everything remains the same! + */ + cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface); + _buffer_free (pchNewPixels); + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + + /* We have to make sure that we won't destroy a surface which + * is lent to some other code (Cairo is drawing into it)! + */ + while (local_os2_surface->pixel_array_lend_count > 0) { + ULONG ulPostCount; + DosResetEventSem (local_os2_surface->hev_pixel_array_came_back, &ulPostCount); + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); + /* Wait for somebody to return the pixels! */ + rc = DosWaitEventSem (local_os2_surface->hev_pixel_array_came_back, timeout); + if (rc != NO_ERROR) { + /* Either timeout or something wrong... Exit. */ + cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface); + _buffer_free (pchNewPixels); + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + /* Okay, grab mutex and check counter again! */ + if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT) + != NO_ERROR) + { + /* Could not get mutex! + * Everything remains the same! + */ + cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface); + _buffer_free (pchNewPixels); + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + } + + /* Destroy old image surface */ + cairo_surface_destroy ((cairo_surface_t *) (local_os2_surface->image_surface)); + /* Destroy old pixel buffer */ + _buffer_free (local_os2_surface->pixels); + /* Set new image surface */ + local_os2_surface->image_surface = pNewImageSurface; + /* Set new pixel buffer */ + local_os2_surface->pixels = pchNewPixels; + /* Change bitmap2 structure */ + local_os2_surface->bitmap_info.cx = new_width; + local_os2_surface->bitmap_info.cy = new_height; + + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); + return CAIRO_STATUS_SUCCESS; +} + +/** + * cairo_os2_surface_refresh_window: + * @surface: the cairo surface to refresh + * @hps_begin_paint: the presentation handle of the window to refresh + * @prcl_begin_paint_rect: the rectangle to redraw + * + * This function can be used to force a repaint of a given area of the client + * window. It should usually be called from the WM_PAINT processing of the + * window procedure. However, it can be called any time a given part of the + * window has to be updated. + * + * The HPS and RECTL to be passed can be taken from the usual WinBeginPaint call + * of the window procedure, but you can also get the HPS using WinGetPS, and you + * can assemble your own update rectangle by hand. + * If hps_begin_paint is %NULL, the function will use the HPS passed into + * cairo_os2_surface_create(). If @prcl_begin_paint_rect is %NULL, the function + * will query the current window size and repaint the whole window. + * + * Cairo assumes that if you set the HWND to the surface using + * cairo_os2_surface_set_hwnd(), this function will be called by the application + * every time it gets a WM_PAINT for that HWND. If the HWND is set in the + * surface, Cairo uses this function to handle dirty areas too. + * + * Since: 1.4 + **/ +void +cairo_os2_surface_refresh_window (cairo_surface_t *surface, + HPS hps_begin_paint, + PRECTL prcl_begin_paint_rect) +{ + cairo_os2_surface_t *local_os2_surface; + RECTL rclTemp; + HPS hpsTemp = 0; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return; + } + + /* If an HPS wasn't provided, see if we can get one. */ + if (!hps_begin_paint) { + hps_begin_paint = local_os2_surface->hps_client_window; + if (!hps_begin_paint) { + if (local_os2_surface->hwnd_client_window) { + hpsTemp = WinGetPS(local_os2_surface->hwnd_client_window); + hps_begin_paint = hpsTemp; + } + /* No HPS & no way to get one, so exit */ + if (!hps_begin_paint) + return; + } + } + + if (prcl_begin_paint_rect == NULL) { + /* Update the whole window! */ + rclTemp.xLeft = 0; + rclTemp.xRight = local_os2_surface->bitmap_info.cx; + rclTemp.yTop = local_os2_surface->bitmap_info.cy; + rclTemp.yBottom = 0; + } else { + /* Use the rectangle we got passed as parameter! */ + rclTemp.xLeft = prcl_begin_paint_rect->xLeft; + rclTemp.xRight = prcl_begin_paint_rect->xRight; + rclTemp.yTop = local_os2_surface->bitmap_info.cy - prcl_begin_paint_rect->yBottom; + rclTemp.yBottom = local_os2_surface->bitmap_info.cy - prcl_begin_paint_rect->yTop ; + } + + /* Get mutex, we'll work with the pixel array! */ + if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT) + != NO_ERROR) + { + /* Could not get mutex! */ + if (hpsTemp) + WinReleasePS(hpsTemp); + return; + } + + if ((local_os2_surface->dirty_area_present) && + (local_os2_surface->rcl_dirty_area.xLeft == rclTemp.xLeft) && + (local_os2_surface->rcl_dirty_area.xRight == rclTemp.xRight) && + (local_os2_surface->rcl_dirty_area.yTop == rclTemp.yTop) && + (local_os2_surface->rcl_dirty_area.yBottom == rclTemp.yBottom)) + { + /* Aha, this call was because of a dirty area, so in this case we + * have to blit the pixels from the screen to the surface! + */ + local_os2_surface->dirty_area_present = FALSE; + _cairo_os2_surface_get_pixels_from_screen (local_os2_surface, + hps_begin_paint, + &rclTemp); + } else { + /* Okay, we have the surface, have the HPS + * (might be from WinBeginPaint () or from WinGetPS () ) + * Now blit there the stuffs! + */ + _cairo_os2_surface_blit_pixels (local_os2_surface, + hps_begin_paint, + &rclTemp); + } + + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); + + if (hpsTemp) + WinReleasePS(hpsTemp); +} + +static cairo_status_t +_cairo_os2_surface_finish (void *abstract_surface) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) abstract_surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH); + } + + DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT); + + /* Destroy old image surface */ + cairo_surface_destroy ((cairo_surface_t *) (local_os2_surface->image_surface)); + /* Destroy old pixel buffer */ + _buffer_free (local_os2_surface->pixels); + DosCloseMutexSem (local_os2_surface->hmtx_use_private_fields); + DosCloseEventSem (local_os2_surface->hev_pixel_array_came_back); + + /* The memory itself will be free'd by the cairo_surface_destroy () + * who called us. + */ + + return CAIRO_STATUS_SUCCESS; +} + +/** + * cairo_os2_surface_set_hwnd: + * @surface: the cairo surface to associate with the window handle + * @hwnd_client_window: the window handle of the client window + * + * Sets window handle for surface; the caller retains ownership of the window. + * If Cairo wants to blit into the window because it is set to blit as the + * surface changes (see cairo_os2_surface_set_manual_window_refresh()), then + * there are two ways it can choose: + * If it knows the HWND of the surface, then it invalidates that area, so the + * application will get a WM_PAINT message and it can call + * cairo_os2_surface_refresh_window() to redraw that area. Otherwise cairo itself + * will use the HPS it got at surface creation time, and blit the pixels itself. + * It's also a solution, but experience shows that if this happens from a non-PM + * thread, then it can screw up PM internals. + * + * So, best solution is to set the HWND for the surface after the surface + * creation, so every blit will be done from application's message processing + * loop, which is the safest way to do. + * + * Since: 1.4 + **/ +void +cairo_os2_surface_set_hwnd (cairo_surface_t *surface, + HWND hwnd_client_window) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return; + } + + if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT) + != NO_ERROR) + { + /* Could not get mutex! */ + return; + } + + local_os2_surface->hwnd_client_window = hwnd_client_window; + + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); +} + +/** + * cairo_os2_surface_set_manual_window_refresh: + * @surface: the cairo surface to set the refresh mode for + * @manual_refresh: the switch for manual surface refresh + * + * This API can tell Cairo if it should show every change to this surface + * immediately in the window or if it should be cached and will only be visible + * once the user calls cairo_os2_surface_refresh_window() explicitly. If the + * HWND was not set in the cairo surface, then the HPS will be used to blit the + * graphics. Otherwise it will invalidate the given window region so the user + * will get the WM_PAINT message to redraw that area of the window. + * + * So, if you're only interested in displaying the final result after several + * drawing operations, you might get better performance if you put the surface + * into manual refresh mode by passing a true value to this function. Then call + * cairo_os2_surface_refresh() whenever desired. + * + * Since: 1.4 + **/ +void +cairo_os2_surface_set_manual_window_refresh (cairo_surface_t *surface, + cairo_bool_t manual_refresh) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return; + } + + local_os2_surface->blit_as_changes = !manual_refresh; +} + +/** + * cairo_os2_surface_get_manual_window_refresh: + * @surface: the cairo surface to query the refresh mode from + * + * This space left intentionally blank. + * + * Return value: current refresh mode of the surface (true by default) + * + * Since: 1.4 + **/ +cairo_bool_t +cairo_os2_surface_get_manual_window_refresh (cairo_surface_t *surface) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return FALSE; + } + + return !(local_os2_surface->blit_as_changes); +} + +/** + * cairo_os2_surface_get_hps: + * @surface: the cairo surface to be querued + * @hps: HPS currently associated with the surface (if any) + * + * This API retrieves the HPS associated with the surface. + * + * Return value: %CAIRO_STATUS_SUCCESS if the hps could be retrieved, + * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface, + * %CAIRO_STATUS_NULL_POINTER if the hps argument is null + * + * Since: 1.10 + **/ +cairo_status_t +cairo_os2_surface_get_hps (cairo_surface_t *surface, + HPS *hps) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH); + } + if (!hps) + { + return _cairo_error (CAIRO_STATUS_NULL_POINTER); + } + *hps = local_os2_surface->hps_client_window; + + return CAIRO_STATUS_SUCCESS; +} + +/** + * cairo_os2_surface_set_hps: + * @surface: the cairo surface to associate with the HPS + * @hps: new HPS to be associated with the surface (the HPS may be null) + * + * This API replaces the HPS associated with the surface with a new one. + * The caller retains ownership of the HPS and must dispose of it after + * the surface has been destroyed or it has been replaced by another + * call to this function. + * + * Return value: %CAIRO_STATUS_SUCCESS if the hps could be replaced, + * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface, + * + * Since: 1.10 + **/ +cairo_status_t +cairo_os2_surface_set_hps (cairo_surface_t *surface, + HPS hps) +{ + cairo_os2_surface_t *local_os2_surface; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH); + } + local_os2_surface->hps_client_window = hps; + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +_cairo_os2_surface_mark_dirty_rectangle (void *surface, + int x, + int y, + int width, + int height) +{ + cairo_os2_surface_t *local_os2_surface; + RECTL rclToBlit; + + local_os2_surface = (cairo_os2_surface_t *) surface; + if ((!local_os2_surface) || + (local_os2_surface->base.backend != &cairo_os2_surface_backend)) + { + /* Invalid parameter (wrong surface)! */ + return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH); + } + + /* Get mutex, we'll work with the pixel array! */ + if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT) + != NO_ERROR) + { + /* Could not get mutex! */ + return CAIRO_STATUS_NO_MEMORY; + } + + /* Check for defaults */ + if (width < 0) + width = local_os2_surface->bitmap_info.cx; + if (height < 0) + height = local_os2_surface->bitmap_info.cy; + + if (local_os2_surface->hwnd_client_window) { + /* We know the HWND, so let's invalidate the window region, + * so the application will redraw itself, using the + * cairo_os2_surface_refresh_window () API from its own PM thread. + * From that function we'll note that it's not a redraw but a + * dirty-rectangle deal stuff, so we'll handle the things from + * there. + * + * This is the safe method, which should be preferred every time. + */ + rclToBlit.xLeft = x; + rclToBlit.xRight = x + width; /* Noninclusive */ + rclToBlit.yTop = local_os2_surface->bitmap_info.cy - (y); + rclToBlit.yBottom = local_os2_surface->bitmap_info.cy - (y + height); /* Noninclusive */ + +#if 0 + if (local_os2_surface->dirty_area_present) { + /* Yikes, there is already a dirty area which should be + * cleaned up, but we'll overwrite it. Sorry. + * TODO: Something clever should be done here. + */ + } +#endif + + /* Set up dirty area reminder stuff */ + memcpy (&(local_os2_surface->rcl_dirty_area), &rclToBlit, sizeof (RECTL)); + local_os2_surface->dirty_area_present = TRUE; + + /* Invalidate window area */ + WinInvalidateRect (local_os2_surface->hwnd_client_window, + &rclToBlit, + FALSE); + } else { + /* We don't know the HWND, so try to blit the pixels from here! + * Please note that it can be problematic if this is not the PM thread! + * + * It can cause internal PM stuffs to be scewed up, for some reason. + * Please always tell the HWND to the surface using the + * cairo_os2_surface_set_hwnd () API, and call cairo_os2_surface_refresh_window () + * from your WM_PAINT, if it's possible! + */ + + rclToBlit.xLeft = x; + rclToBlit.xRight = x + width; /* Noninclusive */ + rclToBlit.yBottom = y; + rclToBlit.yTop = y + height; /* Noninclusive */ + /* Now get the pixels from the screen! */ + _cairo_os2_surface_get_pixels_from_screen (local_os2_surface, + local_os2_surface->hps_client_window, + &rclToBlit); + } + + DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields); + + return CAIRO_STATUS_SUCCESS; +} + +static const cairo_surface_backend_t cairo_os2_surface_backend = { + CAIRO_SURFACE_TYPE_OS2, + _cairo_os2_surface_finish, + _cairo_default_context_create, + + NULL, /* create_similar */ + NULL, /* create_similar_image */ + _cairo_os2_surface_map_to_image, + _cairo_os2_surface_unmap_image, + + _cairo_surface_default_source, + _cairo_os2_surface_acquire_source_image, + _cairo_os2_surface_release_source_image, + NULL, /* snapshot */ + + _cairo_os2_surface_get_extents, + NULL, /* get_font_options */ + + NULL, /* flush */ + _cairo_os2_surface_mark_dirty_rectangle, + + _cairo_surface_fallback_paint, + _cairo_surface_fallback_mask, + _cairo_surface_fallback_fill, + _cairo_surface_fallback_stroke, + NULL, /* fill/stroke */ + _cairo_surface_fallback_glyphs, +}; |