From 217aa3adc121e55d996d0ab9669cba71fe0b7a40 Mon Sep 17 00:00:00 2001 From: Vincent Sanders Date: Fri, 24 Apr 2015 13:52:39 +0100 Subject: [PATCH] Convert beos to bitmap render API --- beos/Makefile.target | 3 +- beos/bitmap.cpp | 463 ++++++++++++++++++++++++++++--------------- beos/thumbnail.cpp | 163 --------------- 3 files changed, 299 insertions(+), 330 deletions(-) delete mode 100644 beos/thumbnail.cpp diff --git a/beos/Makefile.target b/beos/Makefile.target index 8b41a96b7..0c8838555 100644 --- a/beos/Makefile.target +++ b/beos/Makefile.target @@ -95,8 +95,7 @@ endif # S_BEOS are sources purely for the BeOS build S_BEOS := about.cpp bitmap.cpp download.cpp fetch_rsrc.cpp filetype.cpp \ font.cpp gui.cpp login.cpp gui_options.cpp plotters.cpp \ - scaffolding.cpp search.cpp schedule.cpp thumbnail.cpp \ - throbber.cpp window.cpp + scaffolding.cpp search.cpp schedule.cpp throbber.cpp window.cpp S_BEOS := $(addprefix beos/,$(S_BEOS)) RDEF_BEOS := res.rdef diff --git a/beos/bitmap.cpp b/beos/bitmap.cpp index 9a4ee521b..2ed73a4c1 100644 --- a/beos/bitmap.cpp +++ b/beos/bitmap.cpp @@ -16,15 +16,16 @@ * along with this program. If not, see . */ -/** \file - * Generic bitmap handling (BeOS implementation). +/** + * \file + * BeOS implementation of generic bitmaps. * - * This implements the interface given by desktop/bitmap.h using BBitmap. + * This implements the interface given by image/bitmap.h using BBitmap. */ #define __STDBOOL_H__ 1 -//#include #include +#include #include #include #include @@ -32,22 +33,31 @@ #include #include #include +#include + extern "C" { -#include "content/content.h" -#include "image/bitmap.h" #include "utils/log.h" +#include "content/content.h" +#include "content/urldb.h" +#include "desktop/plotters.h" +#include "desktop/browser.h" +#include "desktop/font.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; + 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 @@ -64,7 +74,7 @@ struct bitmap { * * \param src Source 32-bit pixels arranged in ABGR order. * \param dst Output data in BGRA order. - * \param width Width of the bitmap + * \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.) @@ -75,28 +85,28 @@ static inline void nsbeos_rgba_to_bgra(void *src, 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; + 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; + 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; - } + 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; + } } @@ -108,27 +118,26 @@ static inline void nsbeos_rgba_to_bgra(void *src, * \param state a flag word indicating the initial state * \return an opaque struct bitmap, or NULL on memory exhaustion */ - void *bitmap_create(int width, int height, unsigned int state) { - struct bitmap *bmp = (struct bitmap *)malloc(sizeof(struct bitmap)); - if (bmp == NULL) - return NULL; + 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; + 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); + 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->pretile_x = bmp->pretile_y = bmp->pretile_xy = NULL; - bmp->opaque = (state & BITMAP_OPAQUE) != 0; + bmp->opaque = (state & BITMAP_OPAQUE) != 0; - return bmp; + return bmp; } @@ -140,9 +149,9 @@ void *bitmap_create(int width, int height, unsigned int state) */ void bitmap_set_opaque(void *vbitmap, bool opaque) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - bitmap->opaque = opaque; + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + bitmap->opaque = opaque; } @@ -154,10 +163,10 @@ void bitmap_set_opaque(void *vbitmap, bool opaque) */ bool bitmap_test_opaque(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); -/* todo: test if bitmap is opaque */ - return false; + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + /* todo: test if bitmap is opaque */ + return false; } @@ -168,9 +177,9 @@ bool bitmap_test_opaque(void *vbitmap) */ bool bitmap_get_opaque(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return bitmap->opaque; + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + return bitmap->opaque; } @@ -186,9 +195,9 @@ bool bitmap_get_opaque(void *vbitmap) unsigned char *bitmap_get_buffer(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return (unsigned char *)(bitmap->shadow->Bits()); + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + return (unsigned char *)(bitmap->shadow->Bits()); } @@ -198,12 +207,11 @@ unsigned char *bitmap_get_buffer(void *vbitmap) * \param vbitmap a bitmap, as returned by bitmap_create() * \return width of a pixel row in the bitmap */ - size_t bitmap_get_rowstride(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return (bitmap->primary->BytesPerRow()); + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + return (bitmap->primary->BytesPerRow()); } @@ -213,39 +221,42 @@ size_t bitmap_get_rowstride(void *vbitmap) * \param vbitmap a bitmap, as returned by bitmap_create() * \return bytes per pixels of the bitmap */ - size_t bitmap_get_bpp(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - assert(bitmap); - return 4; + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + return 4; } -static void -nsbeos_bitmap_free_pretiles(struct bitmap *bitmap) +/** + * 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); + FREE_TILE(x); + FREE_TILE(y); + FREE_TILE(xy); #undef FREE_TILE } + /** * Free a bitmap. * * \param vbitmap a bitmap, as returned by bitmap_create() */ - 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); + struct bitmap *bitmap = (struct bitmap *)vbitmap; + assert(bitmap); + nsbeos_bitmap_free_pretiles(bitmap); + delete bitmap->primary; + delete bitmap->shadow; + free(bitmap); } @@ -257,22 +268,21 @@ void bitmap_destroy(void *vbitmap) * \param flags modify the behaviour of the save * \return true on success, false on error and error reported */ - 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; + 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 (file.InitCheck() < B_OK) + return false; - if (roster->Translate(&stream, NULL, NULL, &file, type) < B_OK) - return false; + if (roster->Translate(&stream, NULL, NULL, &file, type) < B_OK) + return false; - return true; + return true; } @@ -283,63 +293,67 @@ bool bitmap_save(void *vbitmap, const char *path, unsigned flags) */ 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); + 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); } + int bitmap_get_width(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - return bitmap->primary->Bounds().Width() + 1; + struct bitmap *bitmap = (struct bitmap *)vbitmap; + return bitmap->primary->Bounds().Width() + 1; } + int bitmap_get_height(void *vbitmap) { - struct bitmap *bitmap = (struct bitmap *)vbitmap; - return bitmap->primary->Bounds().Height() + 1; + 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); + 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)); + 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); - } + 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; + 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. * @@ -348,9 +362,10 @@ nsbeos_bitmap_generate_pretile(BBitmap *primary, int repeat_x, int repeat_y) BBitmap * nsbeos_bitmap_get_primary(struct bitmap* bitmap) { - return bitmap->primary; + return bitmap->primary; } + /** * The X-pretiled image associated with this bitmap object. * @@ -359,16 +374,17 @@ nsbeos_bitmap_get_primary(struct bitmap* bitmap) 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; + 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. * @@ -377,15 +393,16 @@ nsbeos_bitmap_get_pretile_x(struct bitmap* bitmap) 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; + 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. * @@ -394,30 +411,146 @@ nsbeos_bitmap_get_pretile_y(struct bitmap* bitmap) 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; + 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, + .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; diff --git a/beos/thumbnail.cpp b/beos/thumbnail.cpp deleted file mode 100644 index 80944a52b..000000000 --- a/beos/thumbnail.cpp +++ /dev/null @@ -1,163 +0,0 @@ -/* - * 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 - * Page thumbnail creation (implementation). - * - * Thumbnails are created by setting the current drawing contexts to a BView - * attached to the BBitmap we are passed, and plotting the page at a small - * scale. - */ - -#define __STDBOOL_H__ 1 -#include -#include -#include -#include -extern "C" { -#include "content/content.h" -#include "content/urldb.h" -#include "desktop/plotters.h" -#include "desktop/browser.h" -#include "desktop/thumbnail.h" -#include "image/bitmap.h" -#include "desktop/font.h" -#include "utils/log.h" -} -#include "beos/scaffolding.h" -#include "beos/plotters.h" -#include "beos/bitmap.h" - -// Zeta PRIVATE: in libzeta for now. -extern status_t ScaleBitmap(const BBitmap& inBitmap, BBitmap& outBitmap); - -#warning XXX do we need to set bitmap:shadow ? - - -/** - * Create a thumbnail of a page. - * - * \param content content structure to thumbnail - * \param bitmap the bitmap to draw to - * \return true on success and bitmap updated else false - */ -bool thumbnail_create(hlcache_handle *content, struct bitmap *bitmap) -{ - 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 false; - } - - small = new BBitmap(thumbnail->Bounds(), - B_BITMAP_ACCEPTS_VIEWS, B_RGB32); - - if (small->InitCheck() < B_OK) { - delete small; - delete big; - return false; - } - - //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 */ - thumbnail_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 true; -}