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Diffstat (limited to 'beos/bitmap.cpp')
-rw-r--r-- | beos/bitmap.cpp | 556 |
1 files changed, 0 insertions, 556 deletions
diff --git a/beos/bitmap.cpp b/beos/bitmap.cpp deleted file mode 100644 index 26b7a3957..000000000 --- a/beos/bitmap.cpp +++ /dev/null @@ -1,556 +0,0 @@ -/* - * Copyright 2008 François Revol <mmu_man@users.sourceforge.net> - * - * This file is part of NetSurf, http://www.netsurf-browser.org/ - * - * NetSurf is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * NetSurf is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -/** - * \file - * BeOS implementation of generic bitmaps. - * - * This implements the interface given by image/bitmap.h using BBitmap. - */ - -#define __STDBOOL_H__ 1 -#include <assert.h> -#include <sys/param.h> -#include <string.h> -#include <Bitmap.h> -#include <BitmapStream.h> -#include <File.h> -#include <GraphicsDefs.h> -#include <TranslatorFormats.h> -#include <TranslatorRoster.h> -#include <View.h> -#include <stdlib.h> - -extern "C" { -#include "utils/log.h" -#include "content/content.h" -#include "content/urldb.h" -#include "desktop/plotters.h" -#include "desktop/browser.h" -#include "image/bitmap.h" -} - -#include "beos/bitmap.h" -#include "beos/gui.h" -#include "beos/scaffolding.h" -#include "beos/plotters.h" - - -struct bitmap { - BBitmap *primary; - BBitmap *shadow; // in NetSurf's ABGR order - BBitmap *pretile_x; - BBitmap *pretile_y; - BBitmap *pretile_xy; - bool opaque; -}; - -#define MIN_PRETILE_WIDTH 256 -#define MIN_PRETILE_HEIGHT 256 - -#warning TODO: check rgba order -#warning TODO: add correct locking (not strictly required) - - -/** - * Convert to BeOS RGBA32_LITTLE (strictly BGRA) from NetSurf's favoured ABGR format. - * - * Copies the converted data elsewhere. Operation is rotate left 8 bits. - * - * \param src Source 32-bit pixels arranged in ABGR order. - * \param dst Output data in BGRA order. - * \param width Width of the bitmap - * \param height Height of the bitmap - * \param rowstride Number of bytes to skip after each row (this implementation - * requires this to be a multiple of 4.) - */ -static inline void nsbeos_rgba_to_bgra(void *src, - void *dst, - int width, - int height, - size_t rowstride) -{ - struct abgr { uint8 a, b, g, r; }; - struct rgba { uint8 r, g, b ,a; }; - struct bgra { uint8 b, g, r, a; }; - struct rgba *from = (struct rgba *)src; - struct bgra *to = (struct bgra *)dst; - - rowstride >>= 2; - - for (int y = 0; y < height; y++) { - for (int x = 0; x < width; x++) { - to[x].b = from[x].b; - to[x].g = from[x].g; - to[x].r = from[x].r; - to[x].a = from[x].a; - /* - if (from[x].a == 0) - *(rgb_color *)&to[x] = B_TRANSPARENT_32_BIT; - */ - } - from += rowstride; - to += rowstride; - } -} - - -/** - * Create a bitmap. - * - * \param width width of image in pixels - * \param height width of image in pixels - * \param state a flag word indicating the initial state - * \return an opaque struct bitmap, or NULL on memory exhaustion - */ -static void *bitmap_create(int width, int height, unsigned int state) -{ - struct bitmap *bmp = (struct bitmap *)malloc(sizeof(struct bitmap)); - if (bmp == NULL) - return NULL; - - int32 flags = 0; - if (state & BITMAP_CLEAR_MEMORY) - flags |= B_BITMAP_CLEAR_TO_WHITE; - - BRect frame(0, 0, width - 1, height - 1); - //XXX: bytes per row ? - bmp->primary = new BBitmap(frame, flags, B_RGBA32); - bmp->shadow = new BBitmap(frame, flags, B_RGBA32); - - bmp->pretile_x = bmp->pretile_y = bmp->pretile_xy = NULL; - - bmp->opaque = (state & BITMAP_OPAQUE) != 0; - - return bmp; -} - - -/** - * Sets whether a bitmap should be plotted opaque - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \param opaque whether the bitmap should be plotted opaque - */ -static void bitmap_set_opaque(void *vbitmap, bool opaque) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - bitmap->opaque = opaque; -} - - -/** - * Tests whether a bitmap has an opaque alpha channel - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \return whether the bitmap is opaque - */ -static bool bitmap_test_opaque(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - /* todo: test if bitmap is opaque */ - return false; -} - - -/** - * Gets whether a bitmap should be plotted opaque - * - * \param vbitmap a bitmap, as returned by bitmap_create() - */ -static bool bitmap_get_opaque(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return bitmap->opaque; -} - - -/** - * Return a pointer to the pixel data in a bitmap. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \return pointer to the pixel buffer - * - * The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end - * of rows. The width of a row in bytes is given by bitmap_get_rowstride(). - */ - -static unsigned char *bitmap_get_buffer(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return (unsigned char *)(bitmap->shadow->Bits()); -} - - -/** - * Find the width of a pixel row in bytes. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \return width of a pixel row in the bitmap - */ -static size_t bitmap_get_rowstride(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return (bitmap->primary->BytesPerRow()); -} - - -/** - * Find the bytes per pixels of a bitmap. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \return bytes per pixels of the bitmap - */ -static size_t bitmap_get_bpp(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return 4; -} - - -/** - * Free pretiles of a bitmap. - * - * \param bitmap The bitmap to free the pretiles of. - */ -static void nsbeos_bitmap_free_pretiles(struct bitmap *bitmap) -{ -#define FREE_TILE(XY) if (bitmap->pretile_##XY) delete (bitmap->pretile_##XY); bitmap->pretile_##XY = NULL - FREE_TILE(x); - FREE_TILE(y); - FREE_TILE(xy); -#undef FREE_TILE -} - - -/** - * Free a bitmap. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - */ -static void bitmap_destroy(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - nsbeos_bitmap_free_pretiles(bitmap); - delete bitmap->primary; - delete bitmap->shadow; - free(bitmap); -} - - -/** - * Save a bitmap in the platform's native format. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - * \param path pathname for file - * \param flags modify the behaviour of the save - * \return true on success, false on error and error reported - */ -static bool bitmap_save(void *vbitmap, const char *path, unsigned flags) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - BTranslatorRoster *roster = BTranslatorRoster::Default(); - BBitmapStream stream(bitmap->primary); - BFile file(path, B_WRITE_ONLY | B_CREATE_FILE); - uint32 type = B_PNG_FORMAT; - - if (file.InitCheck() < B_OK) - return false; - - if (roster->Translate(&stream, NULL, NULL, &file, type) < B_OK) - return false; - - return true; -} - - -/** - * The bitmap image has changed, so flush any persistant cache. - * - * \param vbitmap a bitmap, as returned by bitmap_create() - */ -void bitmap_modified(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - // convert the shadow (ABGR) to into the primary bitmap - nsbeos_rgba_to_bgra(bitmap->shadow->Bits(), bitmap->primary->Bits(), - bitmap->primary->Bounds().Width() + 1, - bitmap->primary->Bounds().Height() + 1, - bitmap->primary->BytesPerRow()); - nsbeos_bitmap_free_pretiles(bitmap); -} - - -static int bitmap_get_width(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - return bitmap->primary->Bounds().Width() + 1; -} - - -static int bitmap_get_height(void *vbitmap) -{ - struct bitmap *bitmap = (struct bitmap *)vbitmap; - return bitmap->primary->Bounds().Height() + 1; -} - - -static BBitmap * -nsbeos_bitmap_generate_pretile(BBitmap *primary, int repeat_x, int repeat_y) -{ - int width = primary->Bounds().Width() + 1; - int height = primary->Bounds().Height() + 1; - size_t primary_stride = primary->BytesPerRow(); - BRect frame(0, 0, width * repeat_x - 1, height * repeat_y - 1); - BBitmap *result = new BBitmap(frame, 0, B_RGBA32); - - char *target_buffer = (char *)result->Bits(); - int x,y,row; - /* This algorithm won't work if the strides are not multiples */ - assert((size_t)(result->BytesPerRow()) == - (primary_stride * repeat_x)); - - if (repeat_x == 1 && repeat_y == 1) { - delete result; - // just return a copy - return new BBitmap(primary); - } - - for (y = 0; y < repeat_y; ++y) { - char *primary_buffer = (char *)primary->Bits(); - for (row = 0; row < height; ++row) { - for (x = 0; x < repeat_x; ++x) { - memcpy(target_buffer, - primary_buffer, primary_stride); - target_buffer += primary_stride; - } - primary_buffer += primary_stride; - } - } - return result; - -} - - -/** - * The primary image associated with this bitmap object. - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ -BBitmap * -nsbeos_bitmap_get_primary(struct bitmap* bitmap) -{ - return bitmap->primary; -} - - -/** - * The X-pretiled image associated with this bitmap object. - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ -BBitmap * -nsbeos_bitmap_get_pretile_x(struct bitmap* bitmap) -{ - if (!bitmap->pretile_x) { - int width = bitmap->primary->Bounds().Width() + 1; - int xmult = (MIN_PRETILE_WIDTH + width - 1)/width; - LOG("Pretiling %p for X*%d", bitmap, xmult); - bitmap->pretile_x = nsbeos_bitmap_generate_pretile(bitmap->primary, xmult, 1); - } - return bitmap->pretile_x; - -} - - -/** - * The Y-pretiled image associated with this bitmap object. - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ -BBitmap * -nsbeos_bitmap_get_pretile_y(struct bitmap* bitmap) -{ - if (!bitmap->pretile_y) { - int height = bitmap->primary->Bounds().Height() + 1; - int ymult = (MIN_PRETILE_HEIGHT + height - 1)/height; - LOG("Pretiling %p for Y*%d", bitmap, ymult); - bitmap->pretile_y = nsbeos_bitmap_generate_pretile(bitmap->primary, 1, ymult); - } - return bitmap->pretile_y; -} - - -/** - * The XY-pretiled image associated with this bitmap object. - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ -BBitmap * -nsbeos_bitmap_get_pretile_xy(struct bitmap* bitmap) -{ - if (!bitmap->pretile_xy) { - int width = bitmap->primary->Bounds().Width() + 1; - int height = bitmap->primary->Bounds().Height() + 1; - int xmult = (MIN_PRETILE_WIDTH + width - 1)/width; - int ymult = (MIN_PRETILE_HEIGHT + height - 1)/height; - LOG("Pretiling %p for X*%d Y*%d", bitmap, xmult, ymult); - bitmap->pretile_xy = nsbeos_bitmap_generate_pretile(bitmap->primary, xmult, ymult); - } - return bitmap->pretile_xy; -} - - -/** - * Create a thumbnail of a page. - * - * \param bitmap the bitmap to draw to - * \param content content structure to thumbnail - * \return true on success and bitmap updated else false - */ -static nserror bitmap_render(struct bitmap *bitmap, hlcache_handle *content) -{ - BBitmap *thumbnail; - BBitmap *small; - BBitmap *big; - BView *oldView; - BView *view; - BView *thumbView; - float width; - float height; - int big_width; - int big_height; - int depth; - - struct redraw_context ctx; - ctx.interactive = false; - ctx.background_images = true; - ctx.plot = &nsbeos_plotters; - - assert(content); - assert(bitmap); - - thumbnail = nsbeos_bitmap_get_primary(bitmap); - width = thumbnail->Bounds().Width(); - height = thumbnail->Bounds().Height(); - depth = 32; - - big_width = MIN(content_get_width(content), 1024); - big_height = (int)(((big_width * height) + (width / 2)) / width); - - BRect contentRect(0, 0, big_width - 1, big_height - 1); - big = new BBitmap(contentRect, B_BITMAP_ACCEPTS_VIEWS, B_RGB32); - - if (big->InitCheck() < B_OK) { - delete big; - return NSERROR_NOMEM; - } - - small = new BBitmap(thumbnail->Bounds(), - B_BITMAP_ACCEPTS_VIEWS, B_RGB32); - - if (small->InitCheck() < B_OK) { - delete small; - delete big; - return NSERROR_NOMEM; - } - - //XXX: _lock ? - // backup the current gc - oldView = nsbeos_current_gc(); - - view = new BView(contentRect, "thumbnailer", - B_FOLLOW_NONE, B_WILL_DRAW); - big->AddChild(view); - - thumbView = new BView(small->Bounds(), "thumbnail", - B_FOLLOW_NONE, B_WILL_DRAW); - small->AddChild(thumbView); - - view->LockLooper(); - - /* impose our view on the content... */ - nsbeos_current_gc_set(view); - - /* render the content */ - content_scaled_redraw(content, big_width, big_height, &ctx); - - view->Sync(); - view->UnlockLooper(); - - // restore the current gc - nsbeos_current_gc_set(oldView); - - - // now scale it down - //XXX: use Zeta's bilinear scaler ? - //#ifdef B_ZETA_VERSION - // err = ScaleBitmap(*shot, *scaledBmp); - //#else - thumbView->LockLooper(); - thumbView->DrawBitmap(big, big->Bounds(), small->Bounds()); - thumbView->Sync(); - thumbView->UnlockLooper(); - - small->LockBits(); - thumbnail->LockBits(); - - // copy it to the bitmap - memcpy(thumbnail->Bits(), small->Bits(), thumbnail->BitsLength()); - - thumbnail->UnlockBits(); - small->UnlockBits(); - - bitmap_modified(bitmap); - - // cleanup - small->RemoveChild(thumbView); - delete thumbView; - delete small; - big->RemoveChild(view); - delete view; - delete big; - - return NSERROR_OK; -} - - -static struct gui_bitmap_table bitmap_table = { - /*.create =*/ bitmap_create, - /*.destroy =*/ bitmap_destroy, - /*.set_opaque =*/ bitmap_set_opaque, - /*.get_opaque =*/ bitmap_get_opaque, - /*.test_opaque =*/ bitmap_test_opaque, - /*.get_buffer =*/ bitmap_get_buffer, - /*.get_rowstride =*/ bitmap_get_rowstride, - /*.get_width =*/ bitmap_get_width, - /*.get_height =*/ bitmap_get_height, - /*.get_bpp =*/ bitmap_get_bpp, - /*.save =*/ bitmap_save, - /*.modified =*/ bitmap_modified, - /*.render =*/ bitmap_render, -}; - -struct gui_bitmap_table *beos_bitmap_table = &bitmap_table; |