Line data    Source code

       1              : /* File: pencil_diagram_layouter.c; Copyright and License: see below */
       2              : 
       3              : #include "pencil_diagram_layouter.h"
       4              : #include "u8/u8_trace.h"
       5              : #include <pango/pangocairo.h>
       6              : #include <stdio.h>
       7              : #include <stdlib.h>
       8              : #include <assert.h>
       9              : 
      10            0 : void pencil_diagram_layouter_init( pencil_diagram_layouter_t *this_ )
      11              : {
      12            0 :     U8_TRACE_BEGIN();
      13              : 
      14            0 :     draw_diagram_label_init( &((*this_).draw_diagram_label) );
      15              : 
      16            0 :     U8_TRACE_END();
      17            0 : }
      18              : 
      19            0 : void pencil_diagram_layouter_destroy( pencil_diagram_layouter_t *this_ )
      20              : {
      21            0 :     U8_TRACE_BEGIN();
      22              : 
      23            0 :     draw_diagram_label_init( &((*this_).draw_diagram_label) );
      24              : 
      25            0 :     U8_TRACE_END();
      26            0 : }
      27              : 
      28            0 : void pencil_diagram_layouter_do_layout ( pencil_diagram_layouter_t *this_,
      29              :                                         const data_diagram_t *the_diagram,
      30              :                                         const geometry_rectangle_t *diagram_bounds,
      31              :                                         const data_profile_part_t *profile,
      32              :                                         const pencil_size_t *pencil_size,
      33              :                                         PangoLayout *font_layout,
      34              :                                         layout_diagram_t *io_layout_diagram )
      35              : {
      36            0 :     U8_TRACE_BEGIN();
      37            0 :     assert( NULL != the_diagram );
      38            0 :     assert( NULL != diagram_bounds );
      39            0 :     assert( NULL != profile );
      40            0 :     assert( NULL != pencil_size );
      41            0 :     assert( NULL != font_layout );
      42            0 :     assert( NULL != io_layout_diagram );
      43              : 
      44              :     /* determine diagram bounds */
      45            0 :     const double left = geometry_rectangle_get_left ( diagram_bounds );
      46            0 :     const double top = geometry_rectangle_get_top ( diagram_bounds );
      47            0 :     const double width = geometry_rectangle_get_width ( diagram_bounds );
      48            0 :     const double height = geometry_rectangle_get_height ( diagram_bounds );
      49            0 :     const double gap = pencil_size_get_standard_object_border( pencil_size );
      50              : 
      51              :     /* calculate label_box */
      52            0 :     const double text_left = left + 3.0 * gap;
      53            0 :     const double text_top = top + 2.0 * gap;
      54            0 :     const geometry_dimensions_t label_dim_proposal
      55            0 :         = { .width = width, .height = pencil_size_get_standard_font_size( pencil_size ) };
      56              :     geometry_dimensions_t label_dim;
      57            0 :     draw_diagram_label_get_type_and_name_dimensions( &((*this_).draw_diagram_label),
      58              :                                                      the_diagram,
      59              :                                                      profile,
      60              :                                                      &label_dim_proposal,
      61              :                                                      pencil_size,
      62              :                                                      font_layout,
      63              :                                                      &label_dim
      64              :                                                    );
      65            0 :     const double text_width = geometry_dimensions_get_width( &label_dim );
      66            0 :     const double text_height = geometry_dimensions_get_height( &label_dim );
      67              :     geometry_rectangle_t label_box;
      68            0 :     geometry_rectangle_init( &label_box, text_left, text_top, text_width, text_height );
      69              : 
      70              :     /* calculate space */
      71            0 :     const double space_left = left + 2.0 * gap;
      72            0 :     const double space_top = top + 4.0 * gap + text_height;
      73            0 :     const double space_width = width - 4.0 * gap;
      74            0 :     const double space_height = height - 6.0 * gap - text_height;
      75              :     geometry_rectangle_t space;
      76            0 :     if ( ( space_width <= 0.0 ) || ( space_height <= 0.0 ) )
      77              :     {
      78            0 :         geometry_rectangle_init_empty( &space );
      79              :     }
      80              :     else
      81              :     {
      82            0 :         geometry_rectangle_init( &space, space_left, space_top, space_width, space_height );
      83              :     }
      84              : 
      85              :     /* set new metrics */
      86            0 :     layout_diagram_set_bounds( io_layout_diagram, diagram_bounds );
      87            0 :     layout_diagram_set_draw_area( io_layout_diagram, &space );
      88            0 :     layout_diagram_set_label_box( io_layout_diagram, &label_box );
      89              : 
      90            0 :     geometry_rectangle_destroy( &space );
      91            0 :     geometry_rectangle_destroy( &label_box );
      92            0 :     U8_TRACE_END();
      93            0 : }
      94              : 
      95              : 
      96              : /*
      97              : Copyright 2017-2026 Andreas Warnke
      98              : 
      99              : Licensed under the Apache License, Version 2.0 (the "License");
     100              : you may not use this file except in compliance with the License.
     101              : You may obtain a copy of the License at
     102              : 
     103              :     http://www.apache.org/licenses/LICENSE-2.0
     104              : 
     105              : Unless required by applicable law or agreed to in writing, software
     106              : distributed under the License is distributed on an "AS IS" BASIS,
     107              : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     108              : See the License for the specific language governing permissions and
     109              : limitations under the License.
     110              : */