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authorVincent Sanders <vince@kyllikki.org>2016-05-05 22:28:51 +0100
committerVincent Sanders <vince@kyllikki.org>2016-05-15 13:44:34 +0100
commitd21447d096a320a08b3efb2b8768fad0dcdcfd64 (patch)
tree1a83814b7c9e94b2f13c473261f23dd3a17dee64 /beos/bitmap.cpp
parent2cbb337756d9af5bda4d594964d446439f602551 (diff)
downloadnetsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.gz
netsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.bz2
move frontends into sub directory
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-/*
- * Copyright 2008 Fran├žois 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;