From 90a15a9753a4e882a4a0d7ce04fdae9ec5d29683 Mon Sep 17 00:00:00 2001 From: François Revel Date: Tue, 3 Jun 2008 19:07:09 +0000 Subject: The BeOS-specific part of the BeOS (and Haiku) port, modeled mostly from the GTK version. Some fixes are needed elsewhere but non-obvious ones I'll post on the mailing list for discussion. Currently it opens windows with a toolbar, url and status bar, a (yet empty) menu bar. Rendering seems to work including scrolling at scale 1 (other non-tested). framesets seems broken though. svn path=/trunk/netsurf/; revision=4253 --- beos/beos_bitmap.cpp | 425 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 425 insertions(+) create mode 100644 beos/beos_bitmap.cpp (limited to 'beos/beos_bitmap.cpp') diff --git a/beos/beos_bitmap.cpp b/beos/beos_bitmap.cpp new file mode 100644 index 000000000..6f950394f --- /dev/null +++ b/beos/beos_bitmap.cpp @@ -0,0 +1,425 @@ +/* + * Copyright 2004 James Bursa + * + * 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 + * Generic bitmap handling (BeOS implementation). + * + * This implements the interface given by desktop/bitmap.h using BBitmap. + */ + +#include +#include +#include +#include +#include +extern "C" { +#include "content/content.h" +#include "image/bitmap.h" +#include "utils/log.h" +} +#include "beos/beos_bitmap.h" +#include "beos/beos_scaffolding.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 pixels Array of 32-bit values, in the form of ABGR. This will + * be overwritten with new data in the form of BGRA. + * \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.) + */ +#if 0 +static inline void nsbeos_abgr_to_bgra(void *src, void *dst, int width, int height, + size_t rowstride) +{ + u_int32_t *from = (u_int32_t *)src; + u_int32_t *to = (u_int32_t *)dst; + + rowstride >>= 2; + + for (int y = 0; y < height; y++) { + for (int x = 0; x < width; x++) { + u_int32_t e = from[x]; + to[x] = (e >> 24) | (e << 8); + } + from += rowstride; + to += rowstride; + } +} +#endif +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 + */ + +struct bitmap *bitmap_create(int width, int height, unsigned int state) +{ + struct bitmap *bmp = (struct bitmap *)malloc(sizeof(struct bitmap)); + if (bmp == NULL) + return NULL; + + BRect frame(0, 0, width - 1, height - 1); + //XXX: bytes per row ? + bmp->primary = new BBitmap(frame, 0, B_RGBA32); + bmp->shadow = new BBitmap(frame, 0, B_RGBA32); + + bmp->pretile_x = bmp->pretile_y = bmp->pretile_xy = NULL; + + bmp->opaque = false; + +#if 0 /* GTK */ + bmp->primary = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, + width, height); + + /* fill the pixbuf in with 100% transparent black, as the memory + * won't have been cleared. + */ + gdk_pixbuf_fill(bmp->primary, 0); + bmp->pretile_x = bmp->pretile_y = bmp->pretile_xy = NULL; +#endif + return bmp; +} + + +/** + * Sets whether a bitmap should be plotted opaque + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param opaque whether the bitmap should be plotted opaque + */ +void bitmap_set_opaque(struct bitmap *bitmap, bool opaque) +{ + assert(bitmap); +/* todo: set bitmap as opaque */ + bitmap->opaque = true; +} + + +/** + * Tests whether a bitmap has an opaque alpha channel + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return whether the bitmap is opaque + */ +bool bitmap_test_opaque(struct bitmap *bitmap) +{ + assert(bitmap); +/* todo: test if bitmap as opaque */ + return bitmap->opaque; +} + + +/** + * Gets whether a bitmap should be plotted opaque + * + * \param bitmap a bitmap, as returned by bitmap_create() + */ +bool bitmap_get_opaque(struct bitmap *bitmap) +{ + assert(bitmap); +/* todo: get whether bitmap is opaque */ + return bitmap->opaque; +} + + +/** + * Return a pointer to the pixel data in a bitmap. + * + * \param bitmap 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(). + */ + +char *bitmap_get_buffer(struct bitmap *bitmap) +{ + assert(bitmap); + return (char *)(bitmap->shadow->Bits()); +} + + +/** + * Find the width of a pixel row in bytes. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return width of a pixel row in the bitmap + */ + +size_t bitmap_get_rowstride(struct bitmap *bitmap) +{ + assert(bitmap); + return (bitmap->primary->BytesPerRow()); +} + + +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 bitmap a bitmap, as returned by bitmap_create() + */ + +void bitmap_destroy(struct bitmap *bitmap) +{ + 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 bitmap 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 + */ + +bool bitmap_save(struct bitmap *bitmap, const char *path, unsigned flags) +{ +#warning WRITEME +#if 0 /* GTK */ + GError *err = NULL; + + gdk_pixbuf_save(bitmap->primary, path, "png", &err, NULL); + + if (err == NULL) + /* TODO: report an error here */ + return false; + +#endif + return true; +} + + +/** + * The bitmap image has changed, so flush any persistant cache. + * + * \param bitmap a bitmap, as returned by bitmap_create() + */ +void bitmap_modified(struct bitmap *bitmap) { + // 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); +} + + +/** + * The bitmap image can be suspended. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param private_word a private word to be returned later + * \param suspend the function to be called upon suspension + * \param resume the function to be called when resuming + */ +void bitmap_set_suspendable(struct bitmap *bitmap, void *private_word, + void (*invalidate)(struct bitmap *bitmap, void *private_word)) { +} + +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; + +#if 0 /* GTK */ + BBitmap *result = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, + width * repeat_x, height * repeat_y); + char *target_buffer = (char *)gdk_pixbuf_get_pixels(result); + int x,y,row; + /* This algorithm won't work if the strides are not multiples */ + assert((size_t)gdk_pixbuf_get_rowstride(result) == + (primary_stride * repeat_x)); + + if (repeat_x == 1 && repeat_y == 1) { + g_object_ref(primary); + g_object_unref(result); + return primary; + } + + for (y = 0; y < repeat_y; ++y) { + char *primary_buffer = (char *)gdk_pixbuf_get_pixels(primary); + 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; +#endif +} + +/** + * 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; +} -- cgit v1.2.3