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Diffstat (limited to 'src/display/nr-arena-image.cpp')
| -rw-r--r-- | src/display/nr-arena-image.cpp | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/src/display/nr-arena-image.cpp b/src/display/nr-arena-image.cpp deleted file mode 100644 index 6539ae4d2..000000000 --- a/src/display/nr-arena-image.cpp +++ /dev/null @@ -1,392 +0,0 @@ -#define __NR_ARENA_IMAGE_C__ - -/* - * RGBA display list system for inkscape - * - * Author: - * Lauris Kaplinski <lauris@kaplinski.com> - * - * Copyright (C) 2001-2002 Lauris Kaplinski - * Copyright (C) 2001 Ximian, Inc. - * - * Released under GNU GPL, read the file 'COPYING' for more information - */ - -#include <libnr/nr-compose-transform.h> -#include <2geom/transforms.h> -#include <libnr/nr-blit.h> -#include "../preferences.h" -#include "nr-arena-image.h" -#include "style.h" -#include "display/nr-arena.h" -#include "display/nr-filter.h" -#include "display/nr-filter-gaussian.h" -#include "sp-filter.h" -#include "sp-filter-reference.h" -#include "sp-gaussian-blur.h" -#include "filters/blend.h" -#include "display/nr-filter-blend.h" - -int nr_arena_image_x_sample = 1; -int nr_arena_image_y_sample = 1; - -/* - * NRArenaCanvasImage - * - */ - -static void nr_arena_image_class_init (NRArenaImageClass *klass); -static void nr_arena_image_init (NRArenaImage *image); -static void nr_arena_image_finalize (NRObject *object); - -static unsigned int nr_arena_image_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset); -static unsigned int nr_arena_image_render (cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags); -static NRArenaItem *nr_arena_image_pick (NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky); - -static NRArenaItemClass *parent_class; - -NRType -nr_arena_image_get_type (void) -{ - static NRType type = 0; - if (!type) { - type = nr_object_register_type (NR_TYPE_ARENA_ITEM, - "NRArenaImage", - sizeof (NRArenaImageClass), - sizeof (NRArenaImage), - (void (*) (NRObjectClass *)) nr_arena_image_class_init, - (void (*) (NRObject *)) nr_arena_image_init); - } - return type; -} - -static void -nr_arena_image_class_init (NRArenaImageClass *klass) -{ - NRObjectClass *object_class; - NRArenaItemClass *item_class; - - object_class = (NRObjectClass *) klass; - item_class = (NRArenaItemClass *) klass; - - parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent; - - object_class->finalize = nr_arena_image_finalize; - object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaImage>; - - item_class->update = nr_arena_image_update; - item_class->render = nr_arena_image_render; - item_class->pick = nr_arena_image_pick; -} - -static void -nr_arena_image_init (NRArenaImage *image) -{ - image->px = NULL; - - image->pxw = image->pxh = image->pxrs = 0; - image->x = image->y = 0.0; - image->width = 256.0; - image->height = 256.0; - - image->grid2px.setIdentity(); - - image->style = 0; - image->render_opacity = TRUE; -} - -static void -nr_arena_image_finalize (NRObject *object) -{ - NRArenaImage *image = NR_ARENA_IMAGE (object); - - image->px = NULL; - - ((NRObjectClass *) parent_class)->finalize (object); -} - -static unsigned int -nr_arena_image_update( NRArenaItem *item, NRRectL */*area*/, NRGC *gc, unsigned int /*state*/, unsigned int /*reset*/ ) -{ - Geom::Affine grid2px; - - // clear old bbox - nr_arena_item_request_render(item); - - NRArenaImage *image = NR_ARENA_IMAGE (item); - - /* Copy affine */ - grid2px = gc->transform.inverse(); - double hscale, vscale; // todo: replace with Geom::Scale - if (image->px) { - hscale = image->pxw / image->width; - vscale = image->pxh / image->height; - } else { - hscale = 1.0; - vscale = 1.0; - } - - image->grid2px[0] = grid2px[0] * hscale; - image->grid2px[2] = grid2px[2] * hscale; - image->grid2px[4] = grid2px[4] * hscale; - image->grid2px[1] = grid2px[1] * vscale; - image->grid2px[3] = grid2px[3] * vscale; - image->grid2px[5] = grid2px[5] * vscale; - - image->grid2px[4] -= image->x * hscale; - image->grid2px[5] -= image->y * vscale; - - /* Calculate bbox */ - if (image->px) { - NRRect bbox; - - bbox.x0 = image->x; - bbox.y0 = image->y; - bbox.x1 = image->x + image->width; - bbox.y1 = image->y + image->height; - - image->c00 = (Geom::Point(bbox.x0, bbox.y0) * gc->transform); - image->c01 = (Geom::Point(bbox.x0, bbox.y1) * gc->transform); - image->c10 = (Geom::Point(bbox.x1, bbox.y0) * gc->transform); - image->c11 = (Geom::Point(bbox.x1, bbox.y1) * gc->transform); - - nr_rect_d_matrix_transform (&bbox, &bbox, gc->transform); - - item->bbox.x0 = static_cast<NR::ICoord>(floor(bbox.x0)); // Floor gives the coordinate in which the point resides - item->bbox.y0 = static_cast<NR::ICoord>(floor(bbox.y0)); - item->bbox.x1 = static_cast<NR::ICoord>(ceil (bbox.x1)); // Ceil gives the first coordinate beyond the point - item->bbox.y1 = static_cast<NR::ICoord>(ceil (bbox.y1)); - } else { - item->bbox.x0 = (int) gc->transform[4]; - item->bbox.y0 = (int) gc->transform[5]; - item->bbox.x1 = item->bbox.x0 - 1; - item->bbox.y1 = item->bbox.y0 - 1; - } - - return NR_ARENA_ITEM_STATE_ALL; -} - -#define FBITS 12 -#define b2i (image->grid2px) - -static unsigned int -nr_arena_image_render( cairo_t *ct, NRArenaItem *item, NRRectL */*area*/, NRPixBlock *pb, unsigned int /*flags*/ ) -{ - Inkscape::Preferences *prefs = Inkscape::Preferences::get(); - nr_arena_image_x_sample = prefs->getInt("/options/bitmapoversample/value", 1); - nr_arena_image_y_sample = nr_arena_image_x_sample; - - bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE); - - NRArenaImage *image = NR_ARENA_IMAGE (item); - - Geom::Affine d2s; - - d2s[0] = b2i[0]; - d2s[1] = b2i[1]; - d2s[2] = b2i[2]; - d2s[3] = b2i[3]; - d2s[4] = b2i[0] * pb->area.x0 + b2i[2] * pb->area.y0 + b2i[4]; - d2s[5] = b2i[1] * pb->area.x0 + b2i[3] * pb->area.y0 + b2i[5]; - - if (!outline) { - - if (!image->px) return item->state; - - guint32 Falpha = item->opacity; - if (Falpha < 1) return item->state; - - unsigned char * dpx = NR_PIXBLOCK_PX (pb); - int const drs = pb->rs; - int const dw = pb->area.x1 - pb->area.x0; - int const dh = pb->area.y1 - pb->area.y0; - - unsigned char * spx = image->px; - int const srs = image->pxrs; - int const sw = image->pxw; - int const sh = image->pxh; - - if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8) { - /* fixme: This is not implemented yet (Lauris) */ - /* nr_R8G8B8_R8G8B8_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample); */ - } else if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) { - nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample); - } else if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8N) { - nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample); - } - - pb->empty = FALSE; - - } else { // outline; draw a rect instead - - if (!ct) - return item->state; - - guint32 rgba = prefs->getInt("/options/wireframecolors/images", 0xff0000ff); - // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat - // by setting color channels in the "wrong" order - cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba)); - - cairo_set_line_width(ct, 0.5); - cairo_new_path(ct); - - Geom::Point shift(pb->area.x0, pb->area.y0); - Geom::Point c00 = image->c00 - shift; - Geom::Point c01 = image->c01 - shift; - Geom::Point c11 = image->c11 - shift; - Geom::Point c10 = image->c10 - shift; - - cairo_move_to (ct, c00[Geom::X], c00[Geom::Y]); - - // the box - cairo_line_to (ct, c10[Geom::X], c10[Geom::Y]); - cairo_line_to (ct, c11[Geom::X], c11[Geom::Y]); - cairo_line_to (ct, c01[Geom::X], c01[Geom::Y]); - cairo_line_to (ct, c00[Geom::X], c00[Geom::Y]); - // the diagonals - cairo_line_to (ct, c11[Geom::X], c11[Geom::Y]); - cairo_move_to (ct, c10[Geom::X], c10[Geom::Y]); - cairo_line_to (ct, c01[Geom::X], c01[Geom::Y]); - - cairo_stroke(ct); - - pb->empty = FALSE; - } - - return item->state; -} - -/** Calculates the closest distance from p to the segment a1-a2*/ -double -distance_to_segment (Geom::Point p, Geom::Point a1, Geom::Point a2) -{ - // calculate sides of the triangle and their squares - double d1 = Geom::L2(p - a1); - double d1_2 = d1 * d1; - double d2 = Geom::L2(p - a2); - double d2_2 = d2 * d2; - double a = Geom::L2(a1 - a2); - double a_2 = a * a; - - // if one of the angles at the base is > 90, return the corresponding side - if (d1_2 + a_2 <= d2_2) return d1; - if (d2_2 + a_2 <= d1_2) return d2; - - // otherwise calculate the height to the base - double peri = (a + d1 + d2)/2; - return (2*sqrt(peri * (peri - a) * (peri - d1) * (peri - d2))/a); -} - -static NRArenaItem * -nr_arena_image_pick( NRArenaItem *item, Geom::Point p, double delta, unsigned int /*sticky*/ ) -{ - NRArenaImage *image = NR_ARENA_IMAGE (item); - - if (!image->px) return NULL; - - bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE); - - if (outline) { - - // frame - if (distance_to_segment (p, image->c00, image->c10) < delta) return item; - if (distance_to_segment (p, image->c10, image->c11) < delta) return item; - if (distance_to_segment (p, image->c11, image->c01) < delta) return item; - if (distance_to_segment (p, image->c01, image->c00) < delta) return item; - - // diagonals - if (distance_to_segment (p, image->c00, image->c11) < delta) return item; - if (distance_to_segment (p, image->c10, image->c01) < delta) return item; - - return NULL; - - } else { - - unsigned char *const pixels = image->px; - int const width = image->pxw; - int const height = image->pxh; - int const rowstride = image->pxrs; - Geom::Point tp = p * image->grid2px; - int const ix = (int)(tp[Geom::X]); - int const iy = (int)(tp[Geom::Y]); - - if ((ix < 0) || (iy < 0) || (ix >= width) || (iy >= height)) - return NULL; - - unsigned char *pix_ptr = pixels + iy * rowstride + ix * 4; - // is the alpha not transparent? - return (pix_ptr[3] > 0) ? item : NULL; - } -} - -/* Utility */ - -void -nr_arena_image_set_pixels (NRArenaImage *image, unsigned char const *px, unsigned int pxw, unsigned int pxh, unsigned int pxrs) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - image->px = (unsigned char *) px; - image->pxw = pxw; - image->pxh = pxh; - image->pxrs = pxrs; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void -nr_arena_image_set_geometry (NRArenaImage *image, double x, double y, double width, double height) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - image->x = x; - image->y = y; - image->width = width; - image->height = height; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void nr_arena_image_set_style (NRArenaImage *image, SPStyle *style) -{ - g_return_if_fail(image != NULL); - g_return_if_fail(NR_IS_ARENA_IMAGE(image)); - - if (style) sp_style_ref(style); - if (image->style) sp_style_unref(image->style); - image->style = style; - - //if image has a filter - if (style->filter.set && style->getFilter()) { - if (!image->filter) { - int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter())); - image->filter = new Inkscape::Filters::Filter(primitives); - } - sp_filter_build_renderer(SP_FILTER(style->getFilter()), image->filter); - } else { - //no filter set for this image - delete image->filter; - image->filter = NULL; - } - - if (style && style->enable_background.set - && style->enable_background.value == SP_CSS_BACKGROUND_NEW) { - image->background_new = true; - } - - nr_arena_item_request_update(image, NR_ARENA_ITEM_STATE_ALL, FALSE); -} - - -/* - Local Variables: - mode:c++ - c-file-style:"stroustrup" - c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) - indent-tabs-mode:nil - fill-column:99 - End: -*/ -// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |
