Emscripten support with glfw3 (and shaders) with changes to nuklear_glfw_gl3.h - demo at www.cwkx.com/nuklear/
This commit is contained in:
Chris Willcocks
parent
a299b46b6d
commit
5d440b565b
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var exec = require('child_process').exec;
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var cmd = 'emcc main.c -o index.html -s USE_GLFW=3';
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exec(cmd, function(error, stdout, stderr) {
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// command output is in stdout
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});
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File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <string.h>
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#include <math.h>
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#include <assert.h>
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#include <math.h>
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#include <limits.h>
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#include <time.h>
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#include <emscripten.h>
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#define GLFW_INCLUDE_ES2
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#include <GLFW/glfw3.h>
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#define NK_INCLUDE_FIXED_TYPES
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#define NK_INCLUDE_STANDARD_IO
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#define NK_INCLUDE_DEFAULT_ALLOCATOR
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#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
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#define NK_INCLUDE_FONT_BAKING
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#define NK_INCLUDE_DEFAULT_FONT
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#define NK_IMPLEMENTATION
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#define NK_GLFW_GL3_IMPLEMENTATION
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#include "nuklear.h"
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#include "nuklear_glfw_gl3.h"
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#define MAX_VERTEX_BUFFER 512 * 1024
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#define MAX_ELEMENT_BUFFER 128 * 1024
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#define UNUSED(a) (void)a
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a)/sizeof(a)[0])
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int result = 1;
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GLFWwindow* win;
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struct nk_context *ctx;
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struct nk_color background;
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int inFullscreen = 0;
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int wasFullscreen = 0;
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int width = 0;
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int height = 0;
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void render();
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void error_callback(int error, const char* description);
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void render() {
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/* Input */
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glfwPollEvents();
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nk_glfw3_new_frame();
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/* GUI */
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{struct nk_panel layout;
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if (nk_begin(ctx, &layout, "Demo", nk_rect(50, 50, 230, 250),
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NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
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NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
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{
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enum {EASY, HARD};
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static int op = EASY;
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static int property = 20;
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nk_layout_row_static(ctx, 30, 80, 1);
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if (nk_button_label(ctx, "button", NK_BUTTON_DEFAULT))
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fprintf(stdout, "button pressed\n");
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nk_layout_row_dynamic(ctx, 30, 2);
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if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
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if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
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nk_layout_row_dynamic(ctx, 25, 1);
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nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
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{struct nk_panel combo;
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nk_layout_row_dynamic(ctx, 20, 1);
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nk_label(ctx, "background:", NK_TEXT_LEFT);
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nk_layout_row_dynamic(ctx, 25, 1);
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if (nk_combo_begin_color(ctx, &combo, background, 400)) {
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nk_layout_row_dynamic(ctx, 120, 1);
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background = nk_color_picker(ctx, background, NK_RGBA);
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nk_layout_row_dynamic(ctx, 25, 1);
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background.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, background.r, 255, 1,1);
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background.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, background.g, 255, 1,1);
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background.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, background.b, 255, 1,1);
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background.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, background.a, 255, 1,1);
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nk_combo_end(ctx);
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}}
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}
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nk_end(ctx);}
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/* Draw */
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{float bg[4];
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nk_color_fv(bg, background);
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glfwGetWindowSize(win, &width, &height);
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glViewport(0, 0, width, height);
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glClear(GL_COLOR_BUFFER_BIT);
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glClearColor(bg[0], bg[1], bg[2], bg[3]);
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/* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state
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* with blending, scissor, face culling, depth test and viewport and
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* defaults everything back into a default state.
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* Make sure to either a.) save and restore or b.) reset your own state after
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* rendering the UI. */
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nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
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glfwSwapBuffers(win);}
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}
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void error_callback(int error, const char* description)
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{
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fprintf(stderr, "Error %d: %s\n", error, description);
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}
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void windowSizeCallback(GLFWwindow* window, int width, int height)
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{
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int isInFullscreen = EM_ASM_INT_V(return !!(document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement));
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if (isInFullscreen && !wasFullscreen)
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{
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printf("Successfully transitioned to fullscreen mode!\n");
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wasFullscreen = isInFullscreen;
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}
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if (wasFullscreen && !isInFullscreen)
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{
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printf("Exited fullscreen. Test succeeded.\n");
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result = 1;
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#ifdef REPORT_RESULT
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REPORT_RESULT();
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#endif
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wasFullscreen = isInFullscreen;
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emscripten_cancel_main_loop();
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return;
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}
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}
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int main()
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{
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/* Setup win */
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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{
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result = 0;
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printf("Could not create window. Test failed.\n");
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#ifdef REPORT_RESULT
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REPORT_RESULT();
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#endif
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return -1;
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}
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glfwWindowHint(GLFW_RESIZABLE , 1);
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win = glfwCreateWindow(1024, 1024, "GLFW resizing test - windowed", NULL, NULL);
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if (!win)
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{
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result = 0;
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printf("Could not create window. Test failed.\n");
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#ifdef REPORT_RESULT
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REPORT_RESULT();
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#endif
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glfwTerminate();
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return -1;
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}
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glfwMakeContextCurrent(win);
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/* Install callbacks */
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glfwSetWindowSizeCallback(win, windowSizeCallback);
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/* Nuklear */
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ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS);
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/* Load Fonts: if none of these are loaded a default font will be used */
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{struct nk_font_atlas *atlas;
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nk_glfw3_font_stash_begin(&atlas);
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/*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
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/*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/
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/*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
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/*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
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/*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
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/*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
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nk_glfw3_font_stash_end();
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/*nk_style_set_font(ctx, &droid->handle);*/}
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background = nk_rgb(190,205,255);
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/* Main loop */
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emscripten_set_main_loop(render, 0, 1);
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nk_glfw3_shutdown();
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glfwTerminate();
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return 0;
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}
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/*
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* Nuklear - v1.00 - public domain
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* no warrenty implied; use at your own risk.
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* authored from 2015-2016 by Micha Mettke
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* emscripten from 2016 by Chris Willcocks
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*/
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/*
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* ==============================================================
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*
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* API
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*
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* ===============================================================
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*/
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#ifndef NK_GLFW_GL3_H_
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#define NK_GLFW_GL3_H_
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#include <GLFW/glfw3.h>
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enum nk_glfw_init_state{
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NK_GLFW3_DEFAULT=0,
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NK_GLFW3_INSTALL_CALLBACKS
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};
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NK_API void nk_compile_shader(GLuint shader, char *name);
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NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state);
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NK_API void nk_glfw3_shutdown(void);
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NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas);
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NK_API void nk_glfw3_font_stash_end(void);
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NK_API void nk_glfw3_new_frame(void);
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NK_API void nk_glfw3_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer);
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NK_API void nk_glfw3_device_destroy(void);
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NK_API void nk_glfw3_device_create(void);
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NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint);
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NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff);
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#endif
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/*
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* ==============================================================
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*
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* IMPLEMENTATION
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*
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* ===============================================================
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*/
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#ifdef NK_GLFW_GL3_IMPLEMENTATION
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#ifndef NK_GLFW_TEXT_MAX
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#define NK_GLFW_TEXT_MAX 256
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#endif
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struct nk_glfw_device {
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struct nk_buffer cmds;
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struct nk_draw_null_texture null;
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GLuint vbo, ebo;
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GLuint prog;
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GLuint vert_shdr;
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GLuint frag_shdr;
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GLint attrib_pos;
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GLint attrib_uv;
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GLint attrib_col;
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GLint uniform_tex;
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GLint uniform_proj;
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GLuint font_tex;
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GLsizei vs;
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size_t vp, vt, vc;
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};
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static struct nk_glfw {
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GLFWwindow *win;
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int width, height;
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int display_width, display_height;
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struct nk_glfw_device ogl;
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struct nk_context ctx;
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struct nk_font_atlas atlas;
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struct nk_vec2 fb_scale;
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unsigned int text[NK_GLFW_TEXT_MAX];
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int text_len;
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float scroll;
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} glfw;
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#ifdef __EMSCRIPTEN__
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#define NK_SHADER_VERSION "#version 100\n"
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#else
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#ifdef __APPLE__
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#define NK_SHADER_VERSION "#version 150\n"
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#else
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#define NK_SHADER_VERSION "#version 300 es\n"
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#endif
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#endif
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NK_API void nk_compile_shader(GLuint shader, char *name)
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{
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GLint status, length, result;
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char *log;
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glCompileShader(shader);
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/* get the shader info log */
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &length);
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log = malloc(length);
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glGetShaderInfoLog(shader, length, &result, log);
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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/* print an error message and the info log */
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if (status != GL_TRUE)
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{
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fprintf(stderr, "Unable to compile %s: %s\n", name, log);
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}
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free(log);
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}
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NK_API void
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nk_glfw3_device_create(void)
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{
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GLint status;
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static const GLchar *vertex_shader =
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NK_SHADER_VERSION
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"uniform mat4 ProjMtx;\n"
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#ifdef __EMSCRIPTEN__
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"attribute vec2 Position;\n"
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"attribute vec2 TexCoord;\n"
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"attribute vec4 Color;\n"
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"varying vec2 Frag_UV;\n"
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"varying vec4 Frag_Color;\n"
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#else
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"in vec2 Position;\n"
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"in vec2 TexCoord;\n"
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"in vec4 Color;\n"
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"out vec2 Frag_UV;\n"
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"out vec4 Frag_Color;\n"
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#endif
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"void main() {\n"
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" Frag_UV = TexCoord;\n"
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" Frag_Color = Color;\n"
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" gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
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"}\n";
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static const GLchar *fragment_shader =
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NK_SHADER_VERSION
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"precision mediump float;\n"
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"uniform sampler2D Texture;\n"
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#ifdef __EMSCRIPTEN__
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"varying vec2 Frag_UV;\n"
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"varying vec4 Frag_Color;\n"
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#else
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"in vec2 Frag_UV;\n"
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"in vec4 Frag_Color;\n"
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"out vec4 Out_Color;\n"
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#endif
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"void main(){\n"
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#ifdef __EMSCRIPTEN__
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" gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV);\n"
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#else
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" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
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#endif
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"}\n";
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struct nk_glfw_device *dev = &glfw.ogl;
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nk_buffer_init_default(&dev->cmds);
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dev->prog = glCreateProgram();
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dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
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dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
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glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
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glCompileShader(dev->vert_shdr);
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glCompileShader(dev->frag_shdr);
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glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
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assert(status == GL_TRUE);
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glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
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assert(status == GL_TRUE);
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glAttachShader(dev->prog, dev->vert_shdr);
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glAttachShader(dev->prog, dev->frag_shdr);
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glLinkProgram(dev->prog);
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glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
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assert(status == GL_TRUE);
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dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
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dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
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dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
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dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
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dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
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{
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/* buffer setup */
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dev->vs = sizeof(struct nk_draw_vertex);
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dev->vp = offsetof(struct nk_draw_vertex, position);
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dev->vt = offsetof(struct nk_draw_vertex, uv);
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dev->vc = offsetof(struct nk_draw_vertex, col);
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glGenBuffers(1, &dev->vbo);
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glGenBuffers(1, &dev->ebo);
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}
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glBindTexture(GL_TEXTURE_2D, 0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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#ifndef __EMSCRIPTEN__
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glBindVertexArray(0);
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#endif
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}
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NK_INTERN void
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nk_glfw3_device_upload_atlas(const void *image, int width, int height)
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{
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struct nk_glfw_device *dev = &glfw.ogl;
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glGenTextures(1, &dev->font_tex);
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glBindTexture(GL_TEXTURE_2D, dev->font_tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
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GL_RGBA, GL_UNSIGNED_BYTE, image);
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}
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NK_API void
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nk_glfw3_device_destroy(void)
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{
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struct nk_glfw_device *dev = &glfw.ogl;
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glDetachShader(dev->prog, dev->vert_shdr);
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glDetachShader(dev->prog, dev->frag_shdr);
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glDeleteShader(dev->vert_shdr);
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glDeleteShader(dev->frag_shdr);
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glDeleteProgram(dev->prog);
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glDeleteTextures(1, &dev->font_tex);
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glDeleteBuffers(1, &dev->vbo);
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glDeleteBuffers(1, &dev->ebo);
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nk_buffer_free(&dev->cmds);
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}
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NK_API void
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nk_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
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{
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struct nk_glfw_device *dev = &glfw.ogl;
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GLfloat ortho[4][4] = {
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{2.0f, 0.0f, 0.0f, 0.0f},
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{0.0f,-2.0f, 0.0f, 0.0f},
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{0.0f, 0.0f,-1.0f, 0.0f},
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{-1.0f,1.0f, 0.0f, 1.0f},
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||||
};
|
||||
ortho[0][0] /= (GLfloat)glfw.width;
|
||||
ortho[1][1] /= (GLfloat)glfw.height;
|
||||
|
||||
/* setup global state */
|
||||
glEnable(GL_BLEND);
|
||||
glBlendEquation(GL_FUNC_ADD);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_CULL_FACE);
|
||||
glDisable(GL_DEPTH_TEST);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
|
||||
/* setup program */
|
||||
glUseProgram(dev->prog);
|
||||
glUniform1i(dev->uniform_tex, 0);
|
||||
glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
|
||||
glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height);
|
||||
{
|
||||
/* convert from command queue into draw list and draw to screen */
|
||||
const struct nk_draw_command *cmd;
|
||||
void *vertices, *elements;
|
||||
const nk_draw_index *offset = NULL;
|
||||
|
||||
/* allocate vertex and element buffer */
|
||||
glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
|
||||
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_pos);
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_uv);
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_col);
|
||||
|
||||
glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vp);
|
||||
glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vt);
|
||||
glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, dev->vs, (void*)dev->vc);
|
||||
|
||||
glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
|
||||
|
||||
glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW);
|
||||
glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW);
|
||||
|
||||
/* load draw vertices & elements directly into vertex + element buffer */
|
||||
#ifndef __EMSCRIPTEN__
|
||||
vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
|
||||
elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
|
||||
#else
|
||||
vertices = malloc((size_t)max_vertex_buffer);
|
||||
elements = malloc((size_t)max_element_buffer);
|
||||
#endif
|
||||
{
|
||||
/* fill converting configuration */
|
||||
struct nk_convert_config config;
|
||||
memset(&config, 0, sizeof(config));
|
||||
config.global_alpha = 1.0f;
|
||||
config.shape_AA = AA;
|
||||
config.line_AA = AA;
|
||||
config.circle_segment_count = 22;
|
||||
config.curve_segment_count = 22;
|
||||
config.arc_segment_count = 22;
|
||||
config.null = dev->null;
|
||||
|
||||
/* setup buffers to load vertices and elements */
|
||||
{struct nk_buffer vbuf, ebuf;
|
||||
nk_buffer_init_fixed(&vbuf, vertices, (size_t)max_vertex_buffer);
|
||||
nk_buffer_init_fixed(&ebuf, elements, (size_t)max_element_buffer);
|
||||
nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config);}
|
||||
}
|
||||
#ifdef __EMSCRIPTEN__
|
||||
glBufferSubData(GL_ARRAY_BUFFER, 0, (size_t)max_vertex_buffer, vertices);
|
||||
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, (size_t)max_element_buffer, elements);
|
||||
free(vertices);
|
||||
free(elements);
|
||||
#else
|
||||
glUnmapBuffer(GL_ARRAY_BUFFER);
|
||||
glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
|
||||
#endif
|
||||
|
||||
/* iterate over and execute each draw command */
|
||||
nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds)
|
||||
{
|
||||
if (!cmd->elem_count) continue;
|
||||
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
|
||||
glScissor(
|
||||
(GLint)(cmd->clip_rect.x * glfw.fb_scale.x),
|
||||
(GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y),
|
||||
(GLint)(cmd->clip_rect.w * glfw.fb_scale.x),
|
||||
(GLint)(cmd->clip_rect.h * glfw.fb_scale.y));
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
|
||||
offset += cmd->elem_count;
|
||||
}
|
||||
nk_clear(&glfw.ctx);
|
||||
}
|
||||
|
||||
/* default OpenGL state */
|
||||
glUseProgram(0);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
||||
#ifndef __EMSCRIPTEN__
|
||||
glBindVertexArray(0);
|
||||
#endif
|
||||
glDisable(GL_BLEND);
|
||||
glDisable(GL_SCISSOR_TEST);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint)
|
||||
{
|
||||
(void)win;
|
||||
if (glfw.text_len < NK_GLFW_TEXT_MAX)
|
||||
glfw.text[glfw.text_len++] = codepoint;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff)
|
||||
{
|
||||
(void)win; (void)xoff;
|
||||
glfw.scroll += (float)yoff;
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
|
||||
{
|
||||
const char *text = glfwGetClipboardString(glfw.win);
|
||||
if (text) nk_textedit_paste(edit, text, nk_strlen(text));
|
||||
(void)usr;
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_clipbard_copy(nk_handle usr, const char *text, int len)
|
||||
{
|
||||
char *str = 0;
|
||||
(void)usr;
|
||||
if (!len) return;
|
||||
str = (char*)malloc((size_t)len+1);
|
||||
if (!str) return;
|
||||
memcpy(str, text, (size_t)len);
|
||||
str[len] = '\0';
|
||||
glfwSetClipboardString(glfw.win, str);
|
||||
free(str);
|
||||
}
|
||||
|
||||
NK_API struct nk_context*
|
||||
nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state)
|
||||
{
|
||||
glfw.win = win;
|
||||
if (init_state == NK_GLFW3_INSTALL_CALLBACKS) {
|
||||
glfwSetScrollCallback(win, nk_gflw3_scroll_callback);
|
||||
glfwSetCharCallback(win, nk_glfw3_char_callback);
|
||||
}
|
||||
|
||||
nk_init_default(&glfw.ctx, 0);
|
||||
glfw.ctx.clip.copy = nk_glfw3_clipbard_copy;
|
||||
glfw.ctx.clip.paste = nk_glfw3_clipbard_paste;
|
||||
glfw.ctx.clip.userdata = nk_handle_ptr(0);
|
||||
nk_glfw3_device_create();
|
||||
return &glfw.ctx;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas)
|
||||
{
|
||||
nk_font_atlas_init_default(&glfw.atlas);
|
||||
nk_font_atlas_begin(&glfw.atlas);
|
||||
*atlas = &glfw.atlas;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_font_stash_end(void)
|
||||
{
|
||||
const void *image; int w, h;
|
||||
image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
|
||||
nk_glfw3_device_upload_atlas(image, w, h);
|
||||
nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex), &glfw.ogl.null);
|
||||
if (glfw.atlas.default_font)
|
||||
nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_new_frame(void)
|
||||
{
|
||||
int i;
|
||||
double x, y;
|
||||
struct nk_context *ctx = &glfw.ctx;
|
||||
struct GLFWwindow *win = glfw.win;
|
||||
|
||||
glfwGetWindowSize(win, &glfw.width, &glfw.height);
|
||||
glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height);
|
||||
glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width;
|
||||
glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height;
|
||||
|
||||
nk_input_begin(ctx);
|
||||
for (i = 0; i < glfw.text_len; ++i)
|
||||
nk_input_unicode(ctx, glfw.text[i]);
|
||||
|
||||
/* optional grabbing behavior */
|
||||
if (ctx->input.mouse.grab)
|
||||
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
|
||||
else if (ctx->input.mouse.ungrab)
|
||||
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
|
||||
|
||||
nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS||
|
||||
glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS);
|
||||
|
||||
if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS ||
|
||||
glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) {
|
||||
nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS);
|
||||
} else {
|
||||
nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_COPY, 0);
|
||||
nk_input_key(ctx, NK_KEY_PASTE, 0);
|
||||
nk_input_key(ctx, NK_KEY_CUT, 0);
|
||||
nk_input_key(ctx, NK_KEY_SHIFT, 0);
|
||||
}
|
||||
|
||||
glfwGetCursorPos(win, &x, &y);
|
||||
nk_input_motion(ctx, (int)x, (int)y);
|
||||
if (ctx->input.mouse.grabbed) {
|
||||
glfwSetCursorPos(glfw.win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y);
|
||||
ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
|
||||
ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
|
||||
}
|
||||
|
||||
nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS);
|
||||
nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS);
|
||||
nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS);
|
||||
nk_input_scroll(ctx, glfw.scroll);
|
||||
nk_input_end(&glfw.ctx);
|
||||
glfw.text_len = 0;
|
||||
glfw.scroll = 0;
|
||||
}
|
||||
|
||||
NK_API
|
||||
void nk_glfw3_shutdown(void)
|
||||
{
|
||||
nk_font_atlas_clear(&glfw.atlas);
|
||||
nk_free(&glfw.ctx);
|
||||
nk_glfw3_device_destroy();
|
||||
memset(&glfw, 0, sizeof(glfw));
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue