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075195d16b
2003-07-22 Michael Natterer <mitch@gimp.org> * app/core/gimpgradient.[ch]: added "gboolean reverse" to gimp_gradient_get_color_at() so all gradients can be used reversed. * app/core/gimpdrawable-blend.[ch] (gimp_drawable_blend) * app/core/gimppalette-import.[ch] (gimp_palette_import_from_gradient): added "gboolean reverse". * app/paint/paint-enums.[ch]: removed enum GimpGradientRepeatMode since it is identical to GimpRepeatMode, except for the now obsolete ONCE_BACKWARD value. * app/paint/gimppaintcore.[ch]: removed gimp_paint_core_get_color_from_gradient()... * app/paint/gimppaintoptions.[ch]: ...and added gimp_paint_options_get_gradient_color(), which is much more general. Added a "reverse" property to GimpGradientOptions and changed the type of the "repeat" property to GimpRepeatMode. * app/paint/gimppaintbrush.c: use gimp_paint_options_get_gradient_color(). * app/tools/gimpblendoptions.[ch]: removed the "repeat" property since it is in the parent class now. * app/gui/gradient-select.c * app/gui/palette-import-dialog.c * app/widgets/gimpgradienteditor.c * app/tools/gimpblendtool.c * tools/pdbgen/pdb/gradients.pdb * tools/pdbgen/pdb/misc_tools.pdb: changed accordingly. * app/tools/gimppaintoptions-gui.c: added a "Reverse" toggle right of the gradient preview. * app/widgets/gimppreviewrenderergradient.[ch]: added "gboolean reverse" member and gimp_preview_renderer_gradient_set_reverse() API. * tools/pdbgen/pdb/paint_tools.pdb: fixed the paintbrush invoker to set GimpPaintOption's "use-fade" and "use-gradient" properties correctly. * app/pdb/gradients_cmds.c * app/pdb/misc_tools_cmds.c * app/pdb/paint_tools_cmds.c * libgimp/gimpenums.h * libgimp/gimpmisctools_pdb.[ch] * plug-ins/pygimp/gimpenums.py * plug-ins/script-fu/script-fu-constants.c * tools/pdbgen/enums.pl: regenerated. * libgimp/gimpcompat.h * plug-ins/script-fu/siod-wrapper.c: removed GimpGradientPaintMode here too since it was only exported accidentially (it's not used by any external API). * plug-ins/script-fu/scripts/3dTruchet.scm * plug-ins/script-fu/scripts/alien-glow-arrow.scm * plug-ins/script-fu/scripts/alien-glow-bar.scm * plug-ins/script-fu/scripts/alien-glow-bullet.scm * plug-ins/script-fu/scripts/alien-glow-button.scm * plug-ins/script-fu/scripts/alien-glow-logo.scm * plug-ins/script-fu/scripts/basic1-logo.scm * plug-ins/script-fu/scripts/basic2-logo.scm * plug-ins/script-fu/scripts/beveled-button.scm * plug-ins/script-fu/scripts/blended-logo.scm * plug-ins/script-fu/scripts/burn-in-anim.scm * plug-ins/script-fu/scripts/coffee.scm * plug-ins/script-fu/scripts/comic-logo.scm * plug-ins/script-fu/scripts/coolmetal-logo.scm * plug-ins/script-fu/scripts/glossy.scm * plug-ins/script-fu/scripts/gradient-bevel-logo.scm * plug-ins/script-fu/scripts/gradient-example.scm * plug-ins/script-fu/scripts/pupi-button.scm * plug-ins/script-fu/scripts/rendermap.scm * plug-ins/script-fu/scripts/sphere.scm * plug-ins/script-fu/scripts/starscape-logo.scm * plug-ins/script-fu/scripts/test-sphere.scm * plug-ins/script-fu/scripts/textured-logo.scm * plug-ins/script-fu/scripts/title-header.scm * plug-ins/script-fu/scripts/weave.scm: pass "reverse" to gimp_blend(). Pass FALSE in most cases and added script parameters were it makes sense.
261 lines
7.3 KiB
C
261 lines
7.3 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimppreviewrenderergradient.c
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* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpmath/gimpmath.h"
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#include "widgets-types.h"
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#ifdef __GNUC__
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#warning FIXME #include "display/display-types.h"
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#endif
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#include "display/display-types.h"
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#include "core/gimpgradient.h"
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#include "display/gimpdisplayshell-render.h"
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#include "gimppreviewrenderergradient.h"
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static void gimp_preview_renderer_gradient_class_init (GimpPreviewRendererGradientClass *klass);
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static void gimp_preview_renderer_gradient_init (GimpPreviewRendererGradient *renderer);
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static void gimp_preview_renderer_gradient_finalize (GObject *object);
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static void gimp_preview_renderer_gradient_render (GimpPreviewRenderer *renderer,
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GtkWidget *widget);
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static GimpPreviewRendererClass *parent_class = NULL;
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GType
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gimp_preview_renderer_gradient_get_type (void)
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{
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static GType renderer_type = 0;
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if (! renderer_type)
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{
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static const GTypeInfo renderer_info =
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{
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sizeof (GimpPreviewRendererGradientClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gimp_preview_renderer_gradient_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpPreviewRendererGradient),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_preview_renderer_gradient_init,
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};
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renderer_type = g_type_register_static (GIMP_TYPE_PREVIEW_RENDERER,
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"GimpPreviewRendererGradient",
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&renderer_info, 0);
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}
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return renderer_type;
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}
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static void
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gimp_preview_renderer_gradient_class_init (GimpPreviewRendererGradientClass *klass)
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{
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GObjectClass *object_class;
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GimpPreviewRendererClass *renderer_class;
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object_class = G_OBJECT_CLASS (klass);
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renderer_class = GIMP_PREVIEW_RENDERER_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gimp_preview_renderer_gradient_finalize;
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renderer_class->render = gimp_preview_renderer_gradient_render;
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}
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static void
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gimp_preview_renderer_gradient_init (GimpPreviewRendererGradient *renderer)
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{
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renderer->even = NULL;
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renderer->odd = NULL;
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renderer->width = -1;
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renderer->left = 0.0;
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renderer->right = 1.0;
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renderer->reverse = FALSE;
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}
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static void
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gimp_preview_renderer_gradient_finalize (GObject *object)
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{
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GimpPreviewRendererGradient *renderer;
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renderer = GIMP_PREVIEW_RENDERER_GRADIENT (object);
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if (renderer->even)
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{
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g_free (renderer->even);
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renderer->even = NULL;
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}
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if (renderer->odd)
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{
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g_free (renderer->odd);
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renderer->odd = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gimp_preview_renderer_gradient_render (GimpPreviewRenderer *renderer,
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GtkWidget *widget)
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{
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GimpPreviewRendererGradient *rendergrad;
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GimpGradient *gradient;
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guchar *even;
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guchar *odd;
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guchar *buf;
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gint x;
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gint y;
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gint a;
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gdouble dx, cur_x;
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GimpRGB color;
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rendergrad = GIMP_PREVIEW_RENDERER_GRADIENT (renderer);
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gradient = GIMP_GRADIENT (renderer->viewable);
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if (renderer->width != rendergrad->width)
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{
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if (rendergrad->even)
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g_free (rendergrad->even);
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if (rendergrad->odd)
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g_free (rendergrad->odd);
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rendergrad->even = g_new (guchar, renderer->rowstride);
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rendergrad->odd = g_new (guchar, renderer->rowstride);
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rendergrad->width = renderer->width;
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}
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even = rendergrad->even;
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odd = rendergrad->odd;
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dx = (rendergrad->right - rendergrad->left) / (renderer->width - 1);
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cur_x = rendergrad->left;
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for (x = 0; x < renderer->width; x++)
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{
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guchar r, g, b;
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gimp_gradient_get_color_at (gradient, cur_x, rendergrad->reverse, &color);
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cur_x += dx;
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a = ((gint) (color.a * 255.0)) << 8;
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gimp_rgb_get_uchar (&color, &r, &g, &b);
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if (x & 0x4)
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{
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*even++ = render_blend_dark_check[a | r];
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*even++ = render_blend_dark_check[a | g];
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*even++ = render_blend_dark_check[a | b];
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*odd++ = render_blend_light_check[a | r];
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*odd++ = render_blend_light_check[a | g];
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*odd++ = render_blend_light_check[a | b];
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}
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else
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{
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*even++ = render_blend_light_check[a | r];
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*even++ = render_blend_light_check[a | g];
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*even++ = render_blend_light_check[a | b];
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*odd++ = render_blend_dark_check[a | r];
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*odd++ = render_blend_dark_check[a | g];
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*odd++ = render_blend_dark_check[a | b];
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}
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}
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if (! renderer->buffer)
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renderer->buffer = g_new (guchar, renderer->height * renderer->rowstride);
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buf = renderer->buffer;
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for (y = 0; y < renderer->height; y++)
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{
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if (y & 0x4)
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memcpy (buf, rendergrad->even, renderer->rowstride);
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else
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memcpy (buf, rendergrad->odd, renderer->rowstride);
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buf += renderer->rowstride;
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}
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renderer->needs_render = FALSE;
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}
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void
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gimp_preview_renderer_gradient_set_offsets (GimpPreviewRendererGradient *renderer,
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gdouble left,
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gdouble right,
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gboolean instant_update)
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{
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g_return_if_fail (GIMP_IS_PREVIEW_RENDERER_GRADIENT (renderer));
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left = CLAMP (left, 0.0, 1.0);
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right = CLAMP (right, left, 1.0);
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if (left != renderer->left || right != renderer->right)
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{
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renderer->left = left;
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renderer->right = right;
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gimp_preview_renderer_invalidate (GIMP_PREVIEW_RENDERER (renderer));
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if (instant_update)
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gimp_preview_renderer_update (GIMP_PREVIEW_RENDERER (renderer));
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}
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}
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void
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gimp_preview_renderer_gradient_set_reverse (GimpPreviewRendererGradient *renderer,
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gboolean reverse)
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{
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g_return_if_fail (GIMP_IS_PREVIEW_RENDERER_GRADIENT (renderer));
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if (reverse != renderer->reverse)
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{
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renderer->reverse = reverse ? TRUE : FALSE;
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gimp_preview_renderer_invalidate (GIMP_PREVIEW_RENDERER (renderer));
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gimp_preview_renderer_update (GIMP_PREVIEW_RENDERER (renderer));
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}
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}
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