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comparison: src/text.c

src/text.c

changeset 58
26ebb2f1e6e6
parent 57
7daec2f067a9
child 59
764fbb013252
equal deleted inserted replaced
57:7daec2f067a9 58:26ebb2f1e6e6
28 #include "ascension/ui/text.h" 28 #include "ascension/ui/text.h"
29 #include "ascension/context.h" 29 #include "ascension/context.h"
30 #include "ascension/error.h" 30 #include "ascension/error.h"
31 #include "ascension/shader.h" 31 #include "ascension/shader.h"
32 32
33 #include <cx/printf.h>
34
33 #include <GL/glew.h> 35 #include <GL/glew.h>
34 36
35 static void asc_text_draw(AscText const *node) { 37 static void asc_text_draw(AscText const *node) {
36 // Obtain shader 38 // Obtain shader
37 AscShaderSprite *shader = &asc_context.active_window->glctx.shader.sprite; 39 AscShaderSprite *shader = &asc_context.active_window->glctx.shader.sprite;
56 asc_texture_init_rectangle(&node->tex); 58 asc_texture_init_rectangle(&node->tex);
57 } 59 }
58 60
59 // Render text onto a surface 61 // Render text onto a surface
60 TTF_Font *font = asc_font_cache_validate(node->font)->ptr; 62 TTF_Font *font = asc_font_cache_validate(node->font)->ptr;
63 static int alignments[] = {
64 TTF_WRAPPED_ALIGN_LEFT,
65 TTF_WRAPPED_ALIGN_CENTER,
66 TTF_WRAPPED_ALIGN_RIGHT
67 };
61 TTF_SetFontWrappedAlign( 68 TTF_SetFontWrappedAlign(
62 font, node->centered ? 69 font, alignments[node->base.flags & ASC_TEXT_ALIGNMENT_MASK]);
63 TTF_WRAPPED_ALIGN_CENTER : TTF_WRAPPED_ALIGN_LEFT
64 );
65 SDL_Surface *surface = TTF_RenderUTF8_Blended_Wrapped( 70 SDL_Surface *surface = TTF_RenderUTF8_Blended_Wrapped(
66 font, node->text, asc_col_sdl(node->color), node->max_width 71 font, node->text.ptr, asc_col_sdl(node->color), node->max_width
67 ); 72 );
68 if (surface == NULL) { 73 if (surface == NULL) {
69 asc_error(SDL_GetError()); 74 asc_error(SDL_GetError());
70 return; 75 return;
71 } 76 }
72 asc_set_scale2d(&node->base, surface->w, surface->h); 77 asc_set_scale2d(&node->base, surface->w, surface->h);
73 asc_update_transform((AscSceneNode *) node); 78 if (asc_test_flag(node->base.flags, ASC_TEXT_CENTERED_FLAG)) {
79 unsigned short newoffx = surface->w / 2;
80 asc_vec2i pos = asc_get_position2d(&node->base);
81 asc_set_position2d(&node->base, pos.x + node->offx - newoffx, pos.y);
82 node->offx = newoffx;
83 }
74 84
75 // Transfer Image Data 85 // Transfer Image Data
76 asc_texture_from_surface(&node->tex, surface); 86 asc_texture_from_surface(&node->tex, surface);
77 87
78 // Free the surface 88 // Free the surface
79 SDL_FreeSurface(surface); 89 SDL_FreeSurface(surface);
80 } 90 }
81 91
82 AscSceneNode *asc_text(int x, int y, char const *text) { 92 AscSceneNode *asc_text(int x, int y, char const *text) {
93 // TODO: implement fancy struct "named param" initialization
83 AscText *node = calloc(1, sizeof(AscText)); 94 AscText *node = calloc(1, sizeof(AscText));
84 95
85 node->base.render_group = ASC_RENDER_GROUP_SPRITE_BLEND; 96 node->base.render_group = ASC_RENDER_GROUP_SPRITE_BLEND;
86 node->base.free_func = (asc_scene_free_func) asc_text_free; 97 node->base.free_func = (asc_scene_free_func) asc_text_free;
87 node->base.update_func = (asc_scene_update_func) asc_text_update; 98 node->base.update_func = (asc_scene_update_func) asc_text_update;
89 100
90 node->base.position.x = (float) x; 101 node->base.position.x = (float) x;
91 node->base.position.y = (float) y; 102 node->base.position.y = (float) y;
92 node->font = asc_context.active_font; 103 node->font = asc_context.active_font;
93 node->color = asc_context.ink; 104 node->color = asc_context.ink;
94 if (text != NULL) { 105 if (text == NULL) {
95 node->text = strdup(text); 106 node->text = cx_mutstr(strdup(" "));
107 } else {
108 node->text = cx_mutstr(strdup(text));
96 } 109 }
97 110
98 // initialize 111 // initialize
99 asc_text_update(node); 112 asc_text_update(node);
100 113
101 return &node->base; 114 return &node->base;
102 } 115 }
103 116
104 void asc_text_free(AscText *node) { 117 void asc_text_free(AscText *node) {
105 asc_texture_destroy(&node->tex); 118 asc_texture_destroy(&node->tex);
106 free(node->text); 119 cx_strfree(&node->text);
107 free(node); 120 free(node);
108 } 121 }
122
123 void asc_text_printf(
124 AscSceneNode *node,
125 char const* format,
126 ...
127 ) {
128 cxmutstr text = ((AscText*)node)->text;
129 va_list ap;
130 va_start(ap, format);
131 cx_vsprintf(&text.ptr, &text.length, format, ap);
132 va_end(ap);
133 asc_node_update(node);
134 }

Mercurial Repository: ascension

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