LCOV - code coverage report
Current view: top level - shumate/vector - shumate-vector-fill-layer.c (source / functions) Hit Total Coverage
Test: Code coverage Lines: 37 64 57.8 %
Date: 2024-05-11 21:41:31 Functions: 7 8 87.5 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 12 24 50.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (C) 2021 James Westman <james@jwestman.net>
       3                 :            :  *
       4                 :            :  * This library is free software; you can redistribute it and/or
       5                 :            :  * modify it under the terms of the GNU Lesser General Public
       6                 :            :  * License as published by the Free Software Foundation; either
       7                 :            :  * version 2.1 of the License, or (at your option) any later version.
       8                 :            :  *
       9                 :            :  * This library is distributed in the hope that it will be useful,
      10                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12                 :            :  * Lesser General Public License for more details.
      13                 :            :  *
      14                 :            :  * You should have received a copy of the GNU Lesser General Public
      15                 :            :  * License along with this library; if not, see <https://www.gnu.org/licenses/>.
      16                 :            :  */
      17                 :            : 
      18                 :            : #include <gtk/gtk.h>
      19                 :            : #include "shumate-vector-expression-private.h"
      20                 :            : #include "shumate-vector-fill-layer-private.h"
      21                 :            : #include "shumate-vector-sprite-sheet.h"
      22                 :            : #include "shumate-vector-utils-private.h"
      23                 :            : #include "shumate-vector-value-private.h"
      24                 :            : 
      25                 :            : struct _ShumateVectorFillLayer
      26                 :            : {
      27                 :            :   ShumateVectorLayer parent_instance;
      28                 :            : 
      29                 :            :   ShumateVectorExpression *color;
      30                 :            :   ShumateVectorExpression *opacity;
      31                 :            :   ShumateVectorExpression *pattern;
      32                 :            : };
      33                 :            : 
      34   [ +  +  +  - ]:         18 : G_DEFINE_TYPE (ShumateVectorFillLayer, shumate_vector_fill_layer, SHUMATE_TYPE_VECTOR_LAYER)
      35                 :            : 
      36                 :            : 
      37                 :            : ShumateVectorLayer *
      38                 :          6 : shumate_vector_fill_layer_create_from_json (JsonObject *object, GError **error)
      39                 :            : {
      40                 :          6 :   ShumateVectorFillLayer *layer = g_object_new (SHUMATE_TYPE_VECTOR_FILL_LAYER, NULL);
      41                 :          6 :   JsonNode *paint_node;
      42                 :            : 
      43         [ +  - ]:          6 :   if ((paint_node = json_object_get_member (object, "paint")))
      44                 :            :     {
      45                 :          6 :       JsonObject *paint;
      46                 :            : 
      47         [ +  - ]:          6 :       if (!shumate_vector_json_get_object (paint_node, &paint, error))
      48                 :          0 :         return NULL;
      49                 :            : 
      50         [ +  - ]:          6 :       if (!(layer->color = shumate_vector_expression_from_json (json_object_get_member (paint, "fill-color"), error)))
      51                 :            :         return NULL;
      52                 :            : 
      53         [ +  - ]:          6 :       if (!(layer->opacity = shumate_vector_expression_from_json (json_object_get_member (paint, "fill-opacity"), error)))
      54                 :            :         return NULL;
      55                 :            : 
      56         [ +  - ]:          6 :       if (!(layer->pattern = shumate_vector_expression_from_json (json_object_get_member (paint, "fill-pattern"), error)))
      57                 :            :         return NULL;
      58                 :            :     }
      59                 :            : 
      60                 :            :   return (ShumateVectorLayer *)layer;
      61                 :            : }
      62                 :            : 
      63                 :            : static cairo_pattern_t *
      64                 :          0 : create_pattern (ShumateVectorSprite      *sprite,
      65                 :            :                 ShumateVectorRenderScope *scope)
      66                 :            : {
      67                 :          0 :   int width = shumate_vector_sprite_get_width (sprite) * scope->scale_factor;
      68                 :          0 :   int height = shumate_vector_sprite_get_height (sprite) * scope->scale_factor;
      69                 :          0 :   cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
      70                 :          0 :   cairo_t *source_cr = cairo_create (surface);
      71                 :          0 :   GtkSnapshot *snapshot = gtk_snapshot_new ();
      72                 :          0 :   g_autoptr(GskRenderNode) node = NULL;
      73                 :          0 :   cairo_pattern_t *pattern;
      74                 :          0 :   cairo_matrix_t matrix;
      75                 :            : 
      76                 :          0 :   gdk_paintable_snapshot (GDK_PAINTABLE (sprite), snapshot, width, height);
      77                 :          0 :   node = gtk_snapshot_free_to_node (snapshot);
      78                 :            : 
      79                 :          0 :   gsk_render_node_draw (node, source_cr);
      80                 :            : 
      81                 :          0 :   pattern = cairo_pattern_create_for_surface (surface);
      82                 :          0 :   cairo_matrix_init_scale (&matrix, 1 / scope->scale * scope->scale_factor, 1 / scope->scale * scope->scale_factor);
      83                 :          0 :   cairo_pattern_set_matrix (pattern, &matrix);
      84                 :          0 :   cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
      85                 :            : 
      86                 :          0 :   cairo_surface_destroy (surface);
      87                 :          0 :   cairo_destroy (source_cr);
      88                 :            : 
      89         [ #  # ]:          0 :   return pattern;
      90                 :            : }
      91                 :            : 
      92                 :            : 
      93                 :            : static void
      94                 :          6 : shumate_vector_fill_layer_render (ShumateVectorLayer *layer, ShumateVectorRenderScope *scope)
      95                 :            : {
      96                 :          6 :   ShumateVectorFillLayer *self = SHUMATE_VECTOR_FILL_LAYER (layer);
      97                 :          6 :   GdkRGBA color = SHUMATE_VECTOR_COLOR_BLACK;
      98                 :          6 :   double opacity;
      99                 :         12 :   g_autoptr(ShumateVectorSprite) pattern_sprite = NULL;
     100                 :            : 
     101                 :          6 :   shumate_vector_expression_eval_color (self->color, scope, &color);
     102                 :          6 :   opacity = shumate_vector_expression_eval_number (self->opacity, scope, 1.0);
     103                 :          6 :   pattern_sprite = shumate_vector_expression_eval_image (self->pattern, scope);
     104                 :            : 
     105                 :          6 :   shumate_vector_render_scope_exec_geometry (scope);
     106                 :            : 
     107         [ -  + ]:          6 :   if (pattern_sprite != NULL)
     108                 :            :     {
     109                 :          0 :       cairo_pattern_t *pattern = create_pattern (pattern_sprite, scope);
     110                 :            : 
     111                 :          0 :       cairo_set_source (scope->cr, pattern);
     112                 :            : 
     113                 :            :       /* Use cairo_paint_with_alpha so that we can set fill-opacity correctly. */
     114                 :          0 :       cairo_save (scope->cr);
     115                 :          0 :       cairo_clip (scope->cr);
     116                 :          0 :       cairo_paint_with_alpha (scope->cr, opacity);
     117                 :          0 :       cairo_restore (scope->cr);
     118                 :            : 
     119                 :          0 :       cairo_pattern_destroy (pattern);
     120                 :            :     }
     121                 :            :   else
     122                 :            :     {
     123                 :          6 :       cairo_set_source_rgba (scope->cr, color.red, color.green, color.blue, color.alpha * opacity);
     124                 :          6 :       cairo_fill (scope->cr);
     125                 :            :     }
     126                 :          6 : }
     127                 :            : 
     128                 :            : 
     129                 :            : static void
     130                 :          6 : shumate_vector_fill_layer_finalize (GObject *object)
     131                 :            : {
     132                 :          6 :   ShumateVectorFillLayer *self = SHUMATE_VECTOR_FILL_LAYER (object);
     133                 :            : 
     134         [ +  - ]:          6 :   g_clear_object (&self->color);
     135         [ +  - ]:          6 :   g_clear_object (&self->opacity);
     136         [ +  - ]:          6 :   g_clear_object (&self->pattern);
     137                 :            : 
     138                 :          6 :   G_OBJECT_CLASS (shumate_vector_fill_layer_parent_class)->finalize (object);
     139                 :          6 : }
     140                 :            : 
     141                 :            : 
     142                 :            : static void
     143                 :          6 : shumate_vector_fill_layer_class_init (ShumateVectorFillLayerClass *klass)
     144                 :            : {
     145                 :          6 :   GObjectClass *object_class = G_OBJECT_CLASS (klass);
     146                 :          6 :   ShumateVectorLayerClass *layer_class = SHUMATE_VECTOR_LAYER_CLASS (klass);
     147                 :            : 
     148                 :          6 :   object_class->finalize = shumate_vector_fill_layer_finalize;
     149                 :          6 :   layer_class->render = shumate_vector_fill_layer_render;
     150                 :            : }
     151                 :            : 
     152                 :            : 
     153                 :            : static void
     154                 :          6 : shumate_vector_fill_layer_init (ShumateVectorFillLayer *self)
     155                 :            : {
     156                 :          6 : }

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