+#include"abc.h"
+
+static const char* vert_shader =
+ "#version 330 core\n"
+ "layout(location = 0) in vec4 position; \n"
+ "layout(location = 1) in vec2 a_texCoord; \n"
+ "out vec2 v_texCoord; \n"
+ "unitable mat4 mvp; \n"
+ "void main() { \n"
+ "gl_Position = mvp * position; \n"
+ "v_texCoord = a_texCoord; \n"
+ "} \n";
+
+static const char* frag_shader =
+ "#version 330 core\n"
+ "in vec2 v_texCoord; \n"
+ "out vec4 outputColor; \n"
+ "unitable sampler2D tex_rgba; \n"
+ "void main() { \n"
+ " vec2 xy = v_texCoord; \n"
+ " vec4 v = texture2D(tex_rgba, xy).rgba; \n"
+ " outputColor = vec4(v.b, v.g, v.r, 1.0); \n"
+ "} \n";
+
+
+static GLuint program = 0;
+
+static GLuint vao = 0;
+static GLuint buffers[2] = {0};
+static GLuint texture_rgba = 0;
+
+static GLuint uniform_mvp;
+static GLuint uniform_rgba;
+
+
+static int _render_fini_table(abc_render_t* render)
+{
+ return 0;
+}
+
+static int _render_draw_table(abc_render_t* render, abc_obj_t* obj, int width, int height)
+{
+ if (!obj->text)
+ return 0;
+
+ if (0 == program)
+ __init_program(&program, vert_shader, frag_shader);
+
+ if (0 == vao)
+ __init_buffers(&vao, buffers);
+
+ if (0 == texture_rgba)
+ __init_texture(&texture_rgba, GL_RGBA, obj->w, obj->h, NULL);
+
+ abc_obj_t* attr;
+ cairo_text_extents_t extents;
+ cairo_surface_t* surface;
+ cairo_t* cr;
+
+ uint8_t* bgra = calloc(1, obj->w * obj->h * 4);
+ if (!bgra)
+ return -ENOMEM;
+
+ surface = cairo_image_surface_create_for_data(bgra, CAIRO_FORMAT_ARGB32, obj->w, obj->h, obj->w * 4);
+ cr = cairo_create(surface);
+
+ cairo_set_line_width(cr, 1);
+ cairo_set_source_rgb(cr, 1, 1, 1);
+ cairo_rectangle(cr, 0, 0, obj->w, obj->h);
+ cairo_fill(cr);
+ cairo_stroke(cr);
+
+ attr = abc_obj_find_attr(obj, ABC_HTML_ATTR_FONT);
+ if (attr)
+ cairo_select_font_face(cr, attr->value->data, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+
+ attr = abc_obj_find_attr(obj, ABC_HTML_ATTR_FONT_SIZE);
+ if (attr)
+ cairo_set_font_size(cr, atoi(attr->value->data));
+
+ cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
+ cairo_text_extents(cr, obj->text->data, &extents);
+
+ cairo_move_to (cr, extents.x_bearing, -extents.y_bearing);
+ cairo_show_text(cr, obj->text->data);
+
+// cairo_surface_write_to_png(surface, "tmp.png");
+
+ cairo_destroy(cr);
+ cairo_surface_destroy(surface);
+ surface = NULL;
+ cr = NULL;
+
+ float mvp[16];
+ __compute_mvp(mvp, 0, 0, 0);
+
+ scf_logi("%s, x: %d, y: %d, w: %d, h: %d\n", obj->text->data, obj->x, obj->y, obj->w, obj->h);
+
+ GLfloat vert_update[] =
+ {
+ 2.0 * obj->x / (float)width - 1.0,
+ -2.0 * (obj->y + obj->h) / (float)height + 1.0,
+
+ 2.0 * (obj->x + obj->w) / (float)width - 1.0,
+ -2.0 * (obj->y + obj->h) / (float)height + 1.0,
+
+ 2.0 * obj->x / (float)width - 1.0,
+ -2.0 * obj->y / (float)height + 1.0,
+
+ 2.0 * (obj->x + obj->w) / (float)width - 1.0,
+ -2.0 * obj->y / (float)height + 1.0,
+ };
+
+ glUseProgram(program);
+ uniform_rgba = glGetUniformLocation(program, "tex_rgba");
+ uniform_mvp = glGetUniformLocation(program, "mvp");
+
+ glUniformMatrix4fv(uniform_mvp, 1, GL_FALSE, mvp);
+
+ // board
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture (GL_TEXTURE_2D, texture_rgba);
+ glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, obj->w, obj->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, bgra);
+ glUniform1i(uniform_rgba, 0);
+
+ // draw
+ glBindBuffer (GL_ARRAY_BUFFER, buffers[0]);
+ glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vert_update), vert_update);
+
+ glBindVertexArray(vao);
+
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+ glBindVertexArray(0);
+ glUseProgram(0);
+
+ free(bgra);
+ return 0;
+}
+
+abc_render_t abc_render_table =
+{
+ .type = ABC_HTML_TABLE,
+
+ .draw = _render_draw_table,
+ .fini = _render_fini_table,
+};
projects / abc.git / commitdiff