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       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-background-layer-private.h"
      20                 :            : #include "shumate-vector-expression-private.h"
      21                 :            : #include "shumate-vector-utils-private.h"
      22                 :            : 
      23                 :            : struct _ShumateVectorBackgroundLayer
      24                 :            : {
      25                 :            :   ShumateVectorLayer parent_instance;
      26                 :            : 
      27                 :            :   ShumateVectorExpression *color;
      28                 :            :   ShumateVectorExpression *opacity;
      29                 :            : };
      30                 :            : 
      31   [ +  +  +  - ]:         18 : G_DEFINE_TYPE (ShumateVectorBackgroundLayer, shumate_vector_background_layer, SHUMATE_TYPE_VECTOR_LAYER)
      32                 :            : 
      33                 :            : 
      34                 :            : ShumateVectorLayer *
      35                 :          6 : shumate_vector_background_layer_create_from_json (JsonObject *object, GError **error)
      36                 :            : {
      37                 :          6 :   ShumateVectorBackgroundLayer *layer = g_object_new (SHUMATE_TYPE_VECTOR_BACKGROUND_LAYER, NULL);
      38                 :          6 :   JsonNode *paint_node;
      39                 :            : 
      40         [ +  - ]:          6 :   if ((paint_node = json_object_get_member (object, "paint")))
      41                 :            :     {
      42                 :          6 :       JsonObject *paint;
      43                 :            : 
      44         [ +  - ]:          6 :       if (!shumate_vector_json_get_object (paint_node, &paint, error))
      45                 :          0 :         return NULL;
      46                 :            : 
      47         [ +  - ]:          6 :       if (!(layer->color = shumate_vector_expression_from_json (json_object_get_member (paint, "background-color"), error)))
      48                 :            :         return NULL;
      49                 :            : 
      50         [ +  - ]:          6 :       if (!(layer->opacity = shumate_vector_expression_from_json (json_object_get_member (paint, "background-opacity"), error)))
      51                 :            :         return NULL;
      52                 :            :     }
      53                 :            : 
      54                 :            :   return (ShumateVectorLayer *)layer;
      55                 :            : }
      56                 :            : 
      57                 :            : 
      58                 :            : static void
      59                 :          6 : shumate_vector_background_layer_finalize (GObject *object)
      60                 :            : {
      61                 :          6 :   ShumateVectorBackgroundLayer *self = SHUMATE_VECTOR_BACKGROUND_LAYER (object);
      62                 :            : 
      63         [ +  - ]:          6 :   g_clear_object (&self->color);
      64         [ +  - ]:          6 :   g_clear_object (&self->opacity);
      65                 :            : 
      66                 :          6 :   G_OBJECT_CLASS (shumate_vector_background_layer_parent_class)->finalize (object);
      67                 :          6 : }
      68                 :            : 
      69                 :            : 
      70                 :            : static void
      71                 :          3 : shumate_vector_background_layer_render (ShumateVectorLayer *layer, ShumateVectorRenderScope *scope)
      72                 :            : {
      73                 :          3 :   ShumateVectorBackgroundLayer *self = SHUMATE_VECTOR_BACKGROUND_LAYER (layer);
      74                 :          3 :   GdkRGBA color = SHUMATE_VECTOR_COLOR_BLACK;
      75                 :          3 :   double opacity;
      76                 :            : 
      77                 :          3 :   shumate_vector_expression_eval_color (self->color, scope, &color);
      78                 :          3 :   opacity = shumate_vector_expression_eval_number (self->opacity, scope, 1.0);
      79                 :            : 
      80                 :          3 :   cairo_set_source_rgba (scope->cr, color.red, color.green, color.blue, color.alpha * opacity);
      81                 :          3 :   cairo_paint (scope->cr);
      82                 :          3 : }
      83                 :            : 
      84                 :            : 
      85                 :            : static void
      86                 :          6 : shumate_vector_background_layer_class_init (ShumateVectorBackgroundLayerClass *klass)
      87                 :            : {
      88                 :          6 :   GObjectClass *object_class = G_OBJECT_CLASS (klass);
      89                 :          6 :   ShumateVectorLayerClass *layer_class = SHUMATE_VECTOR_LAYER_CLASS (klass);
      90                 :            : 
      91                 :          6 :   object_class->finalize = shumate_vector_background_layer_finalize;
      92                 :          6 :   layer_class->render = shumate_vector_background_layer_render;
      93                 :            : }
      94                 :            : 
      95                 :            : 
      96                 :            : static void
      97                 :          6 : shumate_vector_background_layer_init (ShumateVectorBackgroundLayer *self)
      98                 :            : {
      99                 :          6 : }