From d21447d096a320a08b3efb2b8768fad0dcdcfd64 Mon Sep 17 00:00:00 2001 From: Vincent Sanders Date: Thu, 5 May 2016 22:28:51 +0100 Subject: move frontends into sub directory --- frontends/beos/bitmap.cpp | 556 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 556 insertions(+) create mode 100644 frontends/beos/bitmap.cpp (limited to 'frontends/beos/bitmap.cpp') diff --git a/frontends/beos/bitmap.cpp b/frontends/beos/bitmap.cpp new file mode 100644 index 000000000..26b7a3957 --- /dev/null +++ b/frontends/beos/bitmap.cpp @@ -0,0 +1,556 @@ +/* + * Copyright 2008 François Revol + * + * 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 . + */ + +/** + * \file + * BeOS implementation of generic bitmaps. + * + * This implements the interface given by image/bitmap.h using BBitmap. + */ + +#define __STDBOOL_H__ 1 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +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; -- cgit v1.2.3