diff options
Diffstat (limited to 'tdegtk/tdegtk-cairo-support.c')
| -rw-r--r-- | tdegtk/tdegtk-cairo-support.c | 1418 |
1 files changed, 1418 insertions, 0 deletions
diff --git a/tdegtk/tdegtk-cairo-support.c b/tdegtk/tdegtk-cairo-support.c new file mode 100644 index 0000000..8b3a1d5 --- /dev/null +++ b/tdegtk/tdegtk-cairo-support.c @@ -0,0 +1,1418 @@ +/* The TdeGtk Theming Engine for Gtk+. + * Copyright (C) 2011 Canonical Ltd + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301, USA. + * + * Authored by Andrea Cimitan <andrea.cimitan@canonical.com> + * + */ + +#include <cairo.h> +#include <gtk/gtk.h> + +#include "gtkroundedboxprivate.h" +#include "raico-blur.h" +#include "tdegtk-cairo-support.h" +#include "tdegtk-support.h" +#include "tdegtk-types.h" + +/* apply default color */ +static void +apply_default_color (GdkRGBA *colors[4], + GdkRGBA *default_color) +{ + gint i; + + for (i = 0; i < 4; i++) + if (tdegtk_gdk_rgba_is_default (colors[i])) + *colors[i] = *default_color; +} + +/* set the border sides to 0 using hidden_side */ +static void +hide_border_sides (GtkBorder *border, + guint hidden_side) +{ + if (hidden_side & SIDE_TOP) + border->top = 0; + if (hidden_side & SIDE_RIGHT) + border->right = 0; + if (hidden_side & SIDE_BOTTOM) + border->bottom = 0; + if (hidden_side & SIDE_LEFT) + border->left = 0; +} + +/* shrink coordinate using GtkBorder */ +static void +shrink_with_border (GtkBorder *border, + gdouble *x, + gdouble *y, + gdouble *width, + gdouble *height) +{ + *x += border->left; + *y += border->top; + *width -= border->left + border->right; + *height -= border->top + border->bottom; +} + +/* draw the background */ +static void +draw_background (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GdkRGBA bg_color; + GtkBorder border; + GtkRoundedBox border_box; + GtkStateFlags state; + cairo_pattern_t *bg_pat; + gdouble progress; + gboolean running; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "background-image", &bg_pat, + NULL); + gtk_theming_engine_get_background_color (engine, state, &bg_color); + gtk_theming_engine_get_border (engine, state, &border); + + hide_border_sides (&border, hidden_side); + + running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + /* clear cr if we can draw directly on the background */ + if (gtk_theming_engine_has_class (engine, "background")) + { + cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */ + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); + } + + if (running) + { + GdkRGBA other_bg; + GtkStateFlags other_state; + cairo_pattern_t *new_pat = NULL; + cairo_pattern_t *other_pat; + + if (state & GTK_STATE_FLAG_PRELIGHT) + { + other_state = state & ~(GTK_STATE_FLAG_PRELIGHT); + + /* useful math function to use for a pulse loop animation could be + * progress = 1 - MAX (1 - fabs ((progress - 0.5)*2), 0); + * but we need to handle the not-running case (once animation finished), + * otherwise the last frame will be the PRELIGHT at full opacity. */ + progress = 1 - progress; + } + else + other_state = state | GTK_STATE_FLAG_PRELIGHT; + + gtk_theming_engine_get (engine, other_state, + "background-image", &other_pat, + NULL); + gtk_theming_engine_get_background_color (engine, other_state, &other_bg); + + if (bg_pat && other_pat) + { + /* two patterns */ + cairo_pattern_type_t type, other_type; + gint n0, n1; + + cairo_pattern_get_color_stop_count (bg_pat, &n0); + cairo_pattern_get_color_stop_count (other_pat, &n1); + type = cairo_pattern_get_type (bg_pat); + other_type = cairo_pattern_get_type (other_pat); + + if (type == other_type && n0 == n1) + { + /* two similar patterns, blend them point by point */ + gdouble offset0, red0, green0, blue0, alpha0; + gdouble offset1, red1, green1, blue1, alpha1; + gdouble x00, x01, y00, y01, x10, x11, y10, y11; + gdouble r00, r01, r10, r11; + gint i; + + if (type == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (bg_pat, &x00, &y00, &x01, &y01); + cairo_pattern_get_linear_points (other_pat, &x10, &y10, &x11, &y11); + + new_pat = cairo_pattern_create_linear (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress); + } + else + { + cairo_pattern_get_radial_circles (bg_pat, &x00, &y00, &r00, &x01, &y01, &r01); + cairo_pattern_get_radial_circles (other_pat, &x10, &y10, &r10, &x11, &y11, &r11); + + new_pat = cairo_pattern_create_radial (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + r00 + (r10 - r00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress, + r01 + (r11 - r01) * progress); + } + + cairo_pattern_set_filter (new_pat, CAIRO_FILTER_FAST); + i = 0; + + while (i < n0 && i < n1) + { + cairo_pattern_get_color_stop_rgba (bg_pat, i, + &offset0, + &red0, &green0, &blue0, + &alpha0); + cairo_pattern_get_color_stop_rgba (other_pat, i, + &offset1, + &red1, &green1, &blue1, + &alpha1); + cairo_pattern_add_color_stop_rgba (new_pat, + offset0 + ((offset1 - offset0) * progress), + red0 + ((red1 - red0) * progress), + green0 + ((green1 - green0) * progress), + blue0 + ((blue1 - blue0) * progress), + alpha0 + ((alpha1 - alpha0) * progress)); + i++; + } + } + else + { + /* two different patterns, paint them with alpha */ + cairo_save (cr); + + cairo_reset_clip (cr); + cairo_rectangle (cr, 0, 0, width, height); + cairo_clip (cr); + + cairo_push_group (cr); + + cairo_scale (cr, width, height); + + cairo_set_source (cr, other_pat); + cairo_paint_with_alpha (cr, progress); + + cairo_set_source (cr, bg_pat); + cairo_paint_with_alpha (cr, 1.0 - progress); + + new_pat = cairo_pop_group (cr); + + cairo_restore (cr); + } + } + else if (bg_pat || other_pat) + { + /* only one pattern, blend it with a color */ + const GdkRGBA *c; + cairo_pattern_t *p; + gdouble x0, y0, x1, y1, r0, r1; + gint n, i; + + if (bg_pat) + { + p = bg_pat; + c = &other_bg; + progress = 1 - progress; + } + else + { + p = other_pat; + c = &bg_color; + } + + if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1); + new_pat = cairo_pattern_create_linear (x0, y0, x1, y1); + } + else + { + cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1); + new_pat = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1); + } + + cairo_pattern_get_color_stop_count (p, &n); + + for (i = 0; i < n; i++) + { + gdouble red1, green1, blue1, alpha1; + gdouble offset; + + cairo_pattern_get_color_stop_rgba (p, i, + &offset, + &red1, &green1, &blue1, + &alpha1); + cairo_pattern_add_color_stop_rgba (new_pat, offset, + c->red + ((red1 - c->red) * progress), + c->green + ((green1 - c->green) * progress), + c->blue + ((blue1 - c->blue) * progress), + c->alpha + ((alpha1 - c->alpha) * progress)); + } + } + else + { + /* just colors, create a new pattern blending them */ + new_pat = cairo_pattern_create_rgba (CLAMP (bg_color.red + ((other_bg.red - bg_color.red) * progress), 0, 1), + CLAMP (bg_color.green + ((other_bg.green - bg_color.green) * progress), 0, 1), + CLAMP (bg_color.blue + ((other_bg.blue - bg_color.blue) * progress), 0, 1), + CLAMP (bg_color.alpha + ((other_bg.alpha - bg_color.alpha) * progress), 0, 1)); + } + + if (new_pat) + { + /* replace pattern to use */ + cairo_pattern_destroy (bg_pat); + bg_pat = new_pat; + } + + if (other_pat) + cairo_pattern_destroy (other_pat); + } + + /* create the path to fill */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + _gtk_rounded_box_shrink (&border_box, border.top, border.right, border.bottom, border.left); + _gtk_rounded_box_path (&border_box, cr); + + if (bg_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, bg_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + } + else + /* one color */ + gdk_cairo_set_source_rgba (cr, &bg_color); + + cairo_fill (cr); + + if (bg_pat) + cairo_pattern_destroy (bg_pat); + + cairo_restore (cr); +} + +/* draw the inner glow */ +static void +draw_glow (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GdkRGBA *glow_color; + GtkBorder border; + GtkRoundedBox border_box, padding_box; + GtkStateFlags state; + cairo_t *cr_surface; + cairo_surface_t *surface; + gint bradius = 0; + raico_blur_t* blur = NULL; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-glow-radius", &bradius, + "-tdegtk-glow-color", &glow_color, + NULL); + + if (bradius <= 0) + goto end_draw_glow; + + gtk_theming_engine_get_border (engine, state, &border); + + hide_border_sides (&border, hidden_side); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + /* create the path to clip */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + _gtk_rounded_box_shrink (&border_box, border.top, border.right, border.bottom, border.left); + _gtk_rounded_box_path (&border_box, cr); + + cairo_clip (cr); + + /* create the surface to blur */ + surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, + width + bradius * 2, + height + bradius * 2); + cr_surface = cairo_create (surface); + + /* create the path on the surface to blur */ + _gtk_rounded_box_move (&border_box, bradius, bradius); + padding_box = border_box; + _gtk_rounded_box_shrink (&padding_box, border.top * 2, border.right * 2, border.bottom * 2, border.left * 2); + + cairo_set_fill_rule (cr_surface, CAIRO_FILL_RULE_EVEN_ODD); + + gdk_cairo_set_source_rgba (cr_surface, glow_color); + + _gtk_rounded_box_path (&border_box, cr_surface); + _gtk_rounded_box_path (&padding_box, cr_surface); + cairo_fill (cr_surface); + + /* create and apply raico blur */ + blur = raico_blur_create (); + raico_blur_set_radius (blur, bradius); + raico_blur_apply (blur, surface); + + /* paint the blurred surface to cr */ + cairo_set_source_surface (cr, surface, - bradius, - bradius); + cairo_paint (cr); + + cairo_restore (cr); + + cairo_surface_destroy (surface); + cairo_destroy (cr_surface); + +end_draw_glow: + gdk_rgba_free (glow_color); +} + +/* draw a repeated texture */ +static void +draw_texture (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GtkStateFlags state; + GValue value = { 0, }; + cairo_pattern_t *texture = NULL; + cairo_surface_t *surface = NULL; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get_property (engine, "-tdegtk-background-texture", state, &value); + + if (!G_VALUE_HOLDS_BOXED (&value)) + return; + + texture = g_value_dup_boxed (&value); + g_value_unset (&value); + + if (texture != NULL) + cairo_pattern_get_surface (texture, &surface); + + if (surface != NULL) + { + GtkBorder border; + GtkRoundedBox border_box; + cairo_pattern_t *pat; + + gtk_theming_engine_get_border (engine, state, &border); + + hide_border_sides (&border, hidden_side); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + /* create the path to fill */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + _gtk_rounded_box_shrink (&border_box, border.top, border.right, border.bottom, border.left); + _gtk_rounded_box_path (&border_box, cr); + + pat = cairo_pattern_create_for_surface (surface); + cairo_pattern_set_extend (pat, CAIRO_EXTEND_REPEAT); + cairo_set_source (cr, pat); + + cairo_fill (cr); + + cairo_restore (cr); + + cairo_pattern_destroy (pat); + } + + if (texture != NULL) + cairo_pattern_destroy (texture); +} + +void +tdegtk_cairo_draw_background (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GtkBorder *outer_border; + GtkStateFlags state; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-outer-stroke-width", &outer_border, + NULL); + + hide_border_sides (outer_border, hidden_side); + + shrink_with_border (outer_border, &x, &y, &width, &height); + + /* first layer, background */ + draw_background (engine, cr, + x, y, + width, height, + hidden_side, junction); + + /* second layer, glow */ + draw_glow (engine, cr, + x, y, + width, height, + hidden_side, junction); + + /* third layer, texture */ + draw_texture (engine, cr, + x, y, + width, height, + hidden_side, junction); + + gtk_border_free (outer_border); +} + +/* shade a color */ +static void +color_shade (const GdkRGBA *color, + gdouble factor, + GdkRGBA *color_return) +{ + GtkSymbolicColor *literal, *shade; + + literal = gtk_symbolic_color_new_literal (color); + shade = gtk_symbolic_color_new_shade (literal, factor); + gtk_symbolic_color_unref (literal); + + gtk_symbolic_color_resolve (shade, NULL, color_return); + gtk_symbolic_color_unref (shade); +} + +/* draw the border */ +static void +draw_border (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GdkRGBA *colors[4]; + GtkBorder border; + GtkBorderStyle border_style; + GtkRoundedBox border_box, padding_box; + GtkStateFlags state; + cairo_pattern_t *border_pat; + gboolean running; + gdouble progress; + static const guint current_side[4] = { SIDE_TOP, SIDE_RIGHT, SIDE_BOTTOM, SIDE_LEFT }; + guint i, j; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "border-style", &border_style, + "border-top-color", &colors[0], + "border-right-color", &colors[1], + "border-bottom-color", &colors[2], + "border-left-color", &colors[3], + "-tdegtk-border-gradient", &border_pat, + NULL); + gtk_theming_engine_get_border (engine, state, &border); + + hide_border_sides (&border, hidden_side); + + running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + if (running) + { + GtkStateFlags other_state; + cairo_pattern_t *new_pat = NULL; + cairo_pattern_t *other_pat; + + if (state & GTK_STATE_FLAG_PRELIGHT) + { + other_state = state & ~(GTK_STATE_FLAG_PRELIGHT); + progress = 1 - progress; + } + else + other_state = state | GTK_STATE_FLAG_PRELIGHT; + + gtk_theming_engine_get (engine, other_state, + "-tdegtk-border-gradient", &other_pat, + NULL); + + if (border_pat && other_pat) + { + /* two patterns */ + cairo_pattern_type_t type, other_type; + gint n0, n1; + + cairo_pattern_get_color_stop_count (border_pat, &n0); + cairo_pattern_get_color_stop_count (other_pat, &n1); + type = cairo_pattern_get_type (border_pat); + other_type = cairo_pattern_get_type (other_pat); + + if (type == other_type && n0 == n1) + { + /* two similar patterns, blend them point by point */ + gdouble offset0, red0, green0, blue0, alpha0; + gdouble offset1, red1, green1, blue1, alpha1; + gdouble x00, x01, y00, y01, x10, x11, y10, y11; + gdouble r00, r01, r10, r11; + gint i; + + if (type == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (border_pat, &x00, &y00, &x01, &y01); + cairo_pattern_get_linear_points (other_pat, &x10, &y10, &x11, &y11); + + new_pat = cairo_pattern_create_linear (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress); + } + else + { + cairo_pattern_get_radial_circles (border_pat, &x00, &y00, &r00, &x01, &y01, &r01); + cairo_pattern_get_radial_circles (other_pat, &x10, &y10, &r10, &x11, &y11, &r11); + + new_pat = cairo_pattern_create_radial (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + r00 + (r10 - r00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress, + r01 + (r11 - r01) * progress); + } + + cairo_pattern_set_filter (new_pat, CAIRO_FILTER_FAST); + i = 0; + + while (i < n0 && i < n1) + { + cairo_pattern_get_color_stop_rgba (border_pat, i, + &offset0, + &red0, &green0, &blue0, + &alpha0); + cairo_pattern_get_color_stop_rgba (other_pat, i, + &offset1, + &red1, &green1, &blue1, + &alpha1); + cairo_pattern_add_color_stop_rgba (new_pat, + offset0 + ((offset1 - offset0) * progress), + red0 + ((red1 - red0) * progress), + green0 + ((green1 - green0) * progress), + blue0 + ((blue1 - blue0) * progress), + alpha0 + ((alpha1 - alpha0) * progress)); + i++; + } + } + else + { + /* two different patterns, paint them with alpha */ + cairo_save (cr); + + cairo_reset_clip (cr); + cairo_rectangle (cr, 0, 0, width, height); + cairo_clip (cr); + + cairo_push_group (cr); + + cairo_scale (cr, width, height); + + cairo_set_source (cr, other_pat); + cairo_paint_with_alpha (cr, progress); + + cairo_set_source (cr, border_pat); + cairo_paint_with_alpha (cr, 1.0 - progress); + + new_pat = cairo_pop_group (cr); + + cairo_restore (cr); + } + } + else if (border_pat || other_pat) + { + /* one pattern, blend it with a color */ + const GdkRGBA *c; + cairo_pattern_t *p; + gdouble x0, y0, x1, y1, r0, r1; + gint n, i; + + if (border_pat) + { + GdkRGBA other_color; + + gtk_theming_engine_get_border_color (engine, other_state, &other_color); + + p = border_pat; + c = &other_color; + progress = 1 - progress; + } + else + { + GdkRGBA border_color; + + gtk_theming_engine_get_border_color (engine, state, &border_color); + + p = other_pat; + c = &border_color; + } + + if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1); + new_pat = cairo_pattern_create_linear (x0, y0, x1, y1); + } + else + { + cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1); + new_pat = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1); + } + + cairo_pattern_get_color_stop_count (p, &n); + + for (i = 0; i < n; i++) + { + gdouble red1, green1, blue1, alpha1; + gdouble offset; + + cairo_pattern_get_color_stop_rgba (p, i, + &offset, + &red1, &green1, &blue1, + &alpha1); + cairo_pattern_add_color_stop_rgba (new_pat, offset, + c->red + ((red1 - c->red) * progress), + c->green + ((green1 - c->green) * progress), + c->blue + ((blue1 - c->blue) * progress), + c->alpha + ((alpha1 - c->alpha) * progress)); + } + } + else + { + /* just colors, create new colors blending them */ + GdkRGBA *other_colors[4]; + + gtk_theming_engine_get (engine, other_state, + "border-top-color", &other_colors[0], + "border-right-color", &other_colors[1], + "border-bottom-color", &other_colors[2], + "border-left-color", &other_colors[3], + NULL); + + for (i = 0; i < 4; i++) + { + colors[i]->red = CLAMP (colors[i]->red + ((other_colors[i]->red - colors[i]->red) * progress), 0, 1); + colors[i]->green = CLAMP (colors[i]->green + ((other_colors[i]->green - colors[i]->green) * progress), 0, 1); + colors[i]->blue = CLAMP (colors[i]->blue + ((other_colors[i]->blue - colors[i]->blue) * progress), 0, 1); + colors[i]->alpha = CLAMP (colors[i]->alpha + ((other_colors[i]->alpha - colors[i]->alpha) * progress), 0, 1); + gdk_rgba_free (other_colors[i]); + } + } + + if (new_pat) + { + /* replace pattern to use */ + cairo_pattern_destroy (border_pat); + border_pat = new_pat; + } + + if (other_pat) + cairo_pattern_destroy (other_pat); + } + + switch (border_style) + { + default: + g_assert_not_reached (); + case GTK_BORDER_STYLE_NONE: + case GTK_BORDER_STYLE_SOLID: + break; + case GTK_BORDER_STYLE_INSET: + color_shade (colors[1], 1.8, colors[1]); + color_shade (colors[2], 1.8, colors[2]); + break; + case GTK_BORDER_STYLE_OUTSET: + color_shade (colors[0], 1.8, colors[0]); + color_shade (colors[3], 1.8, colors[3]); + break; + } + + /* create the path to fill */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + padding_box = border_box; + _gtk_rounded_box_shrink (&padding_box, border.top, border.right, border.bottom, border.left); + + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + + switch (border_style) + { + default: + g_assert_not_reached (); + case GTK_BORDER_STYLE_NONE: + break; + case GTK_BORDER_STYLE_SOLID: + case GTK_BORDER_STYLE_INSET: + case GTK_BORDER_STYLE_OUTSET: + + if (border_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, border_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else if (gdk_rgba_equal (colors[0], colors[1]) && + gdk_rgba_equal (colors[0], colors[2]) && + gdk_rgba_equal (colors[0], colors[3])) + { + /* one color */ + gdk_cairo_set_source_rgba (cr, colors[0]); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else + { + for (i = 0; i < 4; i++) + { + /* different colors */ + if (hidden_side & current_side[i]) + continue; + + for (j = 0; j < 4; j++) + { + if (hidden_side & current_side[j]) + continue; + + if (i == j || + gdk_rgba_equal (colors[i], colors[j])) + { + /* we were already painted when i == j */ + if (i > j) + break; + + if (j == 0) + _gtk_rounded_box_path_top (&border_box, &padding_box, cr); + else if (j == 1) + _gtk_rounded_box_path_right (&border_box, &padding_box, cr); + else if (j == 2) + _gtk_rounded_box_path_bottom (&border_box, &padding_box, cr); + else if (j == 3) + _gtk_rounded_box_path_left (&border_box, &padding_box, cr); + } + } + /* we were already painted when i == j */ + if (i > j) + continue; + + gdk_cairo_set_source_rgba (cr, colors[i]); + + cairo_fill (cr); + } + } + break; + } + + cairo_restore (cr); + + if (border_pat) + cairo_pattern_destroy (border_pat); + + for (i = 0; i < 4; i++) + gdk_rgba_free (colors[i]); +} + +/* draw the inner stroke */ +static void +draw_inner_stroke (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GdkRGBA *colors[4]; + GdkRGBA *inner_stroke_color; + GtkBorder *inner_border; + GtkRoundedBox border_box, padding_box; + GtkStateFlags state; + cairo_pattern_t *inner_stroke_pat; + static const guint current_side[4] = { SIDE_TOP, SIDE_RIGHT, SIDE_BOTTOM, SIDE_LEFT }; + guint i, j; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-inner-stroke-color", &inner_stroke_color, + "-tdegtk-inner-stroke-top-color", &colors[0], + "-tdegtk-inner-stroke-right-color", &colors[1], + "-tdegtk-inner-stroke-bottom-color", &colors[2], + "-tdegtk-inner-stroke-left-color", &colors[3], + "-tdegtk-inner-stroke-gradient", &inner_stroke_pat, + "-tdegtk-inner-stroke-width", &inner_border, + NULL); + + hide_border_sides (inner_border, hidden_side); + + if (tdegtk_gtk_border_is_zero (inner_border)) + goto end_draw_inner_stroke; + + apply_default_color (colors, inner_stroke_color); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + /* create the path to fill */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + padding_box = border_box; + _gtk_rounded_box_shrink (&padding_box, inner_border->top, + inner_border->right, + inner_border->bottom, + inner_border->left); + + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + + if (inner_stroke_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, inner_stroke_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else if (gdk_rgba_equal (colors[0], colors[1]) && + gdk_rgba_equal (colors[0], colors[2]) && + gdk_rgba_equal (colors[0], colors[3])) + { + /* one color */ + gdk_cairo_set_source_rgba (cr, colors[0]); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else + { + /* different colors */ + for (i = 0; i < 4; i++) + { + if (hidden_side & current_side[i]) + continue; + + for (j = 0; j < 4; j++) + { + if (hidden_side & current_side[j]) + continue; + + if (i == j || + gdk_rgba_equal (colors[i], colors[j])) + { + /* we were already painted when i == j */ + if (i > j) + break; + + if (j == 0) + _gtk_rounded_box_path_top (&border_box, &padding_box, cr); + else if (j == 1) + _gtk_rounded_box_path_right (&border_box, &padding_box, cr); + else if (j == 2) + _gtk_rounded_box_path_bottom (&border_box, &padding_box, cr); + else if (j == 3) + _gtk_rounded_box_path_left (&border_box, &padding_box, cr); + } + } + /* we were already painted when i == j */ + if (i > j) + continue; + + gdk_cairo_set_source_rgba (cr, colors[i]); + + cairo_fill (cr); + } + } + + cairo_restore (cr); + +end_draw_inner_stroke: + gtk_border_free (inner_border); + + if (inner_stroke_pat != NULL) + cairo_pattern_destroy (inner_stroke_pat); + + gdk_rgba_free (inner_stroke_color); + + for (i = 0; i < 4; i++) + gdk_rgba_free (colors[i]); +} + +/* draw the outer stroke */ +static void +draw_outer_stroke (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GdkRGBA *outer_stroke_color; + GdkRGBA *colors[4]; + GtkBorder *outer_border; + GtkRoundedBox border_box, padding_box; + GtkStateFlags state; + cairo_pattern_t *outer_stroke_pat; + static const guint current_side[4] = { SIDE_TOP, SIDE_RIGHT, SIDE_BOTTOM, SIDE_LEFT }; + guint i, j; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-outer-stroke-color", &outer_stroke_color, + "-tdegtk-outer-stroke-top-color", &colors[0], + "-tdegtk-outer-stroke-right-color", &colors[1], + "-tdegtk-outer-stroke-bottom-color", &colors[2], + "-tdegtk-outer-stroke-left-color", &colors[3], + "-tdegtk-outer-stroke-gradient", &outer_stroke_pat, + "-tdegtk-outer-stroke-width", &outer_border, + NULL); + + hide_border_sides (outer_border, hidden_side); + + if (tdegtk_gtk_border_is_zero (outer_border)) + goto end_draw_outer_stroke; + + apply_default_color (colors, outer_stroke_color); + + cairo_save (cr); + + cairo_translate (cr, x, y); + + /* create the path to fill */ + _gtk_rounded_box_init_rect (&border_box, 0, 0, width, height); + _gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction); + padding_box = border_box; + _gtk_rounded_box_shrink (&padding_box, outer_border->top, + outer_border->right, + outer_border->bottom, + outer_border->left); + + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + + if (outer_stroke_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, outer_stroke_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else if (gdk_rgba_equal (colors[0], colors[1]) && + gdk_rgba_equal (colors[0], colors[2]) && + gdk_rgba_equal (colors[0], colors[3])) + { + /* one color */ + gdk_cairo_set_source_rgba (cr, colors[0]); + + _gtk_rounded_box_path (&border_box, cr); + _gtk_rounded_box_path (&padding_box, cr); + cairo_fill (cr); + } + else + { + /* different colors */ + for (i = 0; i < 4; i++) + { + if (hidden_side & current_side[i]) + continue; + + for (j = 0; j < 4; j++) + { + if (hidden_side & current_side[j]) + continue; + + if (i == j || + gdk_rgba_equal (colors[i], colors[j])) + { + /* we were already painted when i == j */ + if (i > j) + break; + + if (j == 0) + _gtk_rounded_box_path_top (&border_box, &padding_box, cr); + else if (j == 1) + _gtk_rounded_box_path_right (&border_box, &padding_box, cr); + else if (j == 2) + _gtk_rounded_box_path_bottom (&border_box, &padding_box, cr); + else if (j == 3) + _gtk_rounded_box_path_left (&border_box, &padding_box, cr); + } + } + /* we were already painted when i == j */ + if (i > j) + continue; + + gdk_cairo_set_source_rgba (cr, colors[i]); + + cairo_fill (cr); + } + } + + cairo_restore (cr); + +end_draw_outer_stroke: + gtk_border_free (outer_border); + + if (outer_stroke_pat != NULL) + cairo_pattern_destroy (outer_stroke_pat); + + gdk_rgba_free (outer_stroke_color); + + for (i = 0; i < 4; i++) + gdk_rgba_free (colors[i]); +} + +void +tdegtk_cairo_draw_frame (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + guint hidden_side, + GtkJunctionSides junction) +{ + GtkBorder border; + GtkBorder *outer_border; + GtkStateFlags state; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-outer-stroke-width", &outer_border, + NULL); + gtk_theming_engine_get_border (engine, state, &border); + + hide_border_sides (&border, hidden_side); + hide_border_sides (outer_border, hidden_side); + + if (!tdegtk_gtk_border_is_zero (outer_border)) + { + /* first layer, outer stroke */ + draw_outer_stroke (engine, cr, + x, y, + width, height, + hidden_side, junction); + + shrink_with_border (outer_border, &x, &y, &width, &height); + } + + /* second layer, inner stroke */ + draw_inner_stroke (engine, cr, + x + border.left, y + border.top, + width - (border.left + border.right), height - (border.top + border.bottom), + hidden_side, junction); + + /* third layer, border */ + draw_border (engine, cr, + x, y, + width, height, + hidden_side, junction); + + gtk_border_free (outer_border); +} + +gboolean +tdegtk_cairo_draw_from_texture (GtkThemingEngine *engine, + cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height) +{ + GtkStateFlags state; + GValue value = { 0, }; + cairo_pattern_t *texture = NULL; + cairo_surface_t *surface = NULL; + gboolean retval = FALSE; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get_property (engine, "background-image", state, &value); + + if (!G_VALUE_HOLDS_BOXED (&value)) + return FALSE; + + texture = g_value_dup_boxed (&value); + g_value_unset (&value); + + if (texture != NULL) + cairo_pattern_get_surface (texture, &surface); + + if (surface != NULL) + { + cairo_save (cr); + + cairo_scale (cr, width / cairo_image_surface_get_width (surface), + height / cairo_image_surface_get_height (surface)); + cairo_set_source_surface (cr, surface, x, y); + + cairo_paint (cr); + + cairo_restore (cr); + + retval = TRUE; + } + + if (texture != NULL) + cairo_pattern_destroy (texture); + + return retval; +} + +void +tdegtk_cairo_round_rect (cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + gint radius, + guint sides, + GtkJunctionSides junction) +{ + radius = CLAMP (radius, 0, MIN (width / 2, height / 2)); + + if (sides & SIDE_RIGHT) + { + if (radius == 0 || + (junction & GTK_JUNCTION_CORNER_TOPRIGHT)) + cairo_move_to (cr, x + width, y); + else + { + cairo_new_sub_path (cr); + + cairo_arc (cr, x + width - radius, y + radius, radius, - G_PI / 4, 0); + } + + if (radius == 0 || + (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT)) + cairo_line_to (cr, x + width, y + height); + else + cairo_arc (cr, x + width - radius, y + height - radius, radius, 0, G_PI / 4); + } + + if (sides & SIDE_BOTTOM) + { + if (radius != 0 && + ! (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT)) + { + if ((sides & SIDE_RIGHT) == 0) + cairo_new_sub_path (cr); + + cairo_arc (cr, x + width - radius, y + height - radius, radius, G_PI / 4, G_PI / 2); + } + else if ((sides & SIDE_RIGHT) == 0) + cairo_move_to (cr, x + width, y + height); + + if (radius == 0 || + (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT)) + cairo_line_to (cr, x, y + height); + else + cairo_arc (cr, x + radius, y + height - radius, radius, G_PI / 2, 3 * (G_PI / 4)); + } + else + cairo_move_to (cr, x, y + height); + + if (sides & SIDE_LEFT) + { + if (radius != 0 && + ! (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT)) + { + if ((sides & SIDE_BOTTOM) == 0) + cairo_new_sub_path (cr); + + cairo_arc (cr, x + radius, y + height - radius, radius, 3 * (G_PI / 4), G_PI); + } + else if ((sides & SIDE_BOTTOM) == 0) + cairo_move_to (cr, x, y + height); + + if (radius == 0 || + (junction & GTK_JUNCTION_CORNER_TOPLEFT)) + cairo_line_to (cr, x, y); + else + cairo_arc (cr, x + radius, y + radius, radius, G_PI, G_PI + G_PI / 4); + } + + if (sides & SIDE_TOP) + { + if (radius != 0 && + ! (junction & GTK_JUNCTION_CORNER_TOPLEFT)) + { + if ((sides & SIDE_LEFT) == 0) + cairo_new_sub_path (cr); + + cairo_arc (cr, x + radius, y + radius, radius, 5 * (G_PI / 4), 3 * (G_PI / 2)); + } + else if ((sides & SIDE_LEFT) == 0) + cairo_move_to (cr, x, y); + + if (radius == 0 || + (junction & GTK_JUNCTION_CORNER_TOPRIGHT)) + cairo_line_to (cr, x + width, y); + else + cairo_arc (cr, x + width - radius, y + radius, radius, 3 * (G_PI / 2), - G_PI / 4); + } +} + +void +tdegtk_cairo_round_rect_inner (cairo_t *cr, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + gint radius, + guint sides, + GtkJunctionSides junction) +{ + gdouble line_width; + + line_width = cairo_get_line_width (cr); + + /* center the rounded rectangle using line_width */ + tdegtk_cairo_round_rect (cr, x + line_width / 2.0, + y + line_width / 2.0, + width - line_width, + height - line_width, + radius, sides, junction); +} + +void +tdegtk_cairo_set_source_border (GtkThemingEngine *engine, + cairo_t *cr, + gdouble width, + gdouble height) +{ + GdkRGBA border_color; + GtkBorderStyle border_style; + GtkStateFlags state; + cairo_pattern_t *border_pat; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "border-style", &border_style, + "-tdegtk-border-gradient", &border_pat, + NULL); + gtk_theming_engine_get_border_color (engine, state, &border_color); + + if (border_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, border_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + } + else + /* one color */ + gdk_cairo_set_source_rgba (cr, &border_color); + + if (border_pat != NULL) + cairo_pattern_destroy (border_pat); +} + +void +tdegtk_cairo_set_source_inner_stroke (GtkThemingEngine *engine, + cairo_t *cr, + gdouble width, + gdouble height) +{ + GdkRGBA *inner_stroke_color; + GtkStateFlags state; + cairo_pattern_t *inner_stroke_pat; + + state = gtk_theming_engine_get_state (engine); + + gtk_theming_engine_get (engine, state, + "-tdegtk-inner-stroke-color", &inner_stroke_color, + "-tdegtk-inner-stroke-gradient", &inner_stroke_pat, + NULL); + + if (inner_stroke_pat) + { + /* pattern */ + cairo_scale (cr, width, height); + cairo_set_source (cr, inner_stroke_pat); + cairo_scale (cr, 1.0 / width, 1.0 / height); + } + else + /* one color */ + gdk_cairo_set_source_rgba (cr, inner_stroke_color); + + if (inner_stroke_pat != NULL) + cairo_pattern_destroy (inner_stroke_pat); + + gdk_rgba_free (inner_stroke_color); +} |