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-rw-r--r--subprojects/nk_pugl/nuklear/demo/glfw_opengl3/Makefile26
-rw-r--r--subprojects/nk_pugl/nuklear/demo/glfw_opengl3/main.c200
-rw-r--r--subprojects/nk_pugl/nuklear/demo/glfw_opengl3/nuklear_glfw_gl3.h492
3 files changed, 718 insertions, 0 deletions
diff --git a/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/Makefile b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/Makefile
new file mode 100644
index 0000000..da95261
--- /dev/null
+++ b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/Makefile
@@ -0,0 +1,26 @@
+# Install
+BIN = demo
+
+# Flags
+CFLAGS += -std=c99 -pedantic -O2
+
+SRC = main.c
+OBJ = $(SRC:.c=.o)
+
+ifeq ($(OS),Windows_NT)
+BIN := $(BIN).exe
+LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32
+else
+ UNAME_S := $(shell uname -s)
+ GLFW3 := $(shell pkg-config --libs glfw3)
+ ifeq ($(UNAME_S),Darwin)
+ LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib
+ else
+ LIBS = $(GLFW3) -lGL -lm -lGLU -lGLEW
+ endif
+endif
+
+$(BIN):
+ @mkdir -p bin
+ rm -f bin/$(BIN) $(OBJS)
+ $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)
diff --git a/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/main.c b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/main.c
new file mode 100644
index 0000000..529e88c
--- /dev/null
+++ b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/main.c
@@ -0,0 +1,200 @@
+/* nuklear - 1.32.0 - public domain */
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <string.h>
+#include <math.h>
+#include <assert.h>
+#include <math.h>
+#include <limits.h>
+#include <time.h>
+
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#define NK_INCLUDE_FIXED_TYPES
+#define NK_INCLUDE_STANDARD_IO
+#define NK_INCLUDE_STANDARD_VARARGS
+#define NK_INCLUDE_DEFAULT_ALLOCATOR
+#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
+#define NK_INCLUDE_FONT_BAKING
+#define NK_INCLUDE_DEFAULT_FONT
+#define NK_IMPLEMENTATION
+#define NK_GLFW_GL3_IMPLEMENTATION
+#include "../../nuklear.h"
+#include "nuklear_glfw_gl3.h"
+
+#define WINDOW_WIDTH 1200
+#define WINDOW_HEIGHT 800
+
+#define MAX_VERTEX_BUFFER 512 * 1024
+#define MAX_ELEMENT_BUFFER 128 * 1024
+
+/* ===============================================================
+ *
+ * EXAMPLE
+ *
+ * ===============================================================*/
+/* This are some code examples to provide a small overview of what can be
+ * done with this library. To try out an example uncomment the defines */
+/*#define INCLUDE_ALL */
+/*#define INCLUDE_STYLE */
+/*#define INCLUDE_CALCULATOR */
+/*#define INCLUDE_OVERVIEW */
+/*#define INCLUDE_NODE_EDITOR */
+
+#ifdef INCLUDE_ALL
+ #define INCLUDE_STYLE
+ #define INCLUDE_CALCULATOR
+ #define INCLUDE_OVERVIEW
+ #define INCLUDE_NODE_EDITOR
+#endif
+
+#ifdef INCLUDE_STYLE
+ #include "../style.c"
+#endif
+#ifdef INCLUDE_CALCULATOR
+ #include "../calculator.c"
+#endif
+#ifdef INCLUDE_OVERVIEW
+ #include "../overview.c"
+#endif
+#ifdef INCLUDE_NODE_EDITOR
+ #include "../node_editor.c"
+#endif
+
+/* ===============================================================
+ *
+ * DEMO
+ *
+ * ===============================================================*/
+static void error_callback(int e, const char *d)
+{printf("Error %d: %s\n", e, d);}
+
+int main(void)
+{
+ /* Platform */
+ static GLFWwindow *win;
+ int width = 0, height = 0;
+ struct nk_context *ctx;
+ struct nk_colorf bg;
+
+ /* GLFW */
+ glfwSetErrorCallback(error_callback);
+ if (!glfwInit()) {
+ fprintf(stdout, "[GFLW] failed to init!\n");
+ exit(1);
+ }
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+ glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+#ifdef __APPLE__
+ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
+#endif
+ win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
+ glfwMakeContextCurrent(win);
+ glfwGetWindowSize(win, &width, &height);
+
+ /* OpenGL */
+ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+ glewExperimental = 1;
+ if (glewInit() != GLEW_OK) {
+ fprintf(stderr, "Failed to setup GLEW\n");
+ exit(1);
+ }
+
+ ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS);
+ /* Load Fonts: if none of these are loaded a default font will be used */
+ /* Load Cursor: if you uncomment cursor loading please hide the cursor */
+ {struct nk_font_atlas *atlas;
+ nk_glfw3_font_stash_begin(&atlas);
+ /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
+ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/
+ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
+ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
+ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
+ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
+ nk_glfw3_font_stash_end();
+ /*nk_style_load_all_cursors(ctx, atlas->cursors);*/
+ /*nk_style_set_font(ctx, &droid->handle);*/}
+
+ #ifdef INCLUDE_STYLE
+ /*set_style(ctx, THEME_WHITE);*/
+ /*set_style(ctx, THEME_RED);*/
+ /*set_style(ctx, THEME_BLUE);*/
+ /*set_style(ctx, THEME_DARK);*/
+ #endif
+
+ bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f;
+ while (!glfwWindowShouldClose(win))
+ {
+ /* Input */
+ glfwPollEvents();
+ nk_glfw3_new_frame();
+
+ /* GUI */
+ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250),
+ NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
+ NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
+ {
+ enum {EASY, HARD};
+ static int op = EASY;
+ static int property = 20;
+ nk_layout_row_static(ctx, 30, 80, 1);
+ if (nk_button_label(ctx, "button"))
+ fprintf(stdout, "button pressed\n");
+
+ nk_layout_row_dynamic(ctx, 30, 2);
+ if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
+ if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
+
+ nk_layout_row_dynamic(ctx, 25, 1);
+ nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
+
+ nk_layout_row_dynamic(ctx, 20, 1);
+ nk_label(ctx, "background:", NK_TEXT_LEFT);
+ nk_layout_row_dynamic(ctx, 25, 1);
+ if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) {
+ nk_layout_row_dynamic(ctx, 120, 1);
+ bg = nk_color_picker(ctx, bg, NK_RGBA);
+ nk_layout_row_dynamic(ctx, 25, 1);
+ bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f);
+ bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f);
+ bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f);
+ bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f);
+ nk_combo_end(ctx);
+ }
+ }
+ nk_end(ctx);
+
+ /* -------------- EXAMPLES ---------------- */
+ #ifdef INCLUDE_CALCULATOR
+ calculator(ctx);
+ #endif
+ #ifdef INCLUDE_OVERVIEW
+ overview(ctx);
+ #endif
+ #ifdef INCLUDE_NODE_EDITOR
+ node_editor(ctx);
+ #endif
+ /* ----------------------------------------- */
+
+ /* Draw */
+ glfwGetWindowSize(win, &width, &height);
+ glViewport(0, 0, width, height);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glClearColor(bg.r, bg.g, bg.b, bg.a);
+ /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state
+ * with blending, scissor, face culling, depth test and viewport and
+ * defaults everything back into a default state.
+ * Make sure to either a.) save and restore or b.) reset your own state after
+ * rendering the UI. */
+ nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
+ glfwSwapBuffers(win);
+ }
+ nk_glfw3_shutdown();
+ glfwTerminate();
+ return 0;
+}
+
diff --git a/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/nuklear_glfw_gl3.h b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/nuklear_glfw_gl3.h
new file mode 100644
index 0000000..8fe98fc
--- /dev/null
+++ b/subprojects/nk_pugl/nuklear/demo/glfw_opengl3/nuklear_glfw_gl3.h
@@ -0,0 +1,492 @@
+/*
+ * Nuklear - 1.32.0 - public domain
+ * no warrenty implied; use at your own risk.
+ * authored from 2015-2016 by Micha Mettke
+ */
+/*
+ * ==============================================================
+ *
+ * API
+ *
+ * ===============================================================
+ */
+#ifndef NK_GLFW_GL3_H_
+#define NK_GLFW_GL3_H_
+
+#include <GLFW/glfw3.h>
+
+enum nk_glfw_init_state{
+ NK_GLFW3_DEFAULT=0,
+ NK_GLFW3_INSTALL_CALLBACKS
+};
+
+NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state);
+NK_API void nk_glfw3_shutdown(void);
+NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas);
+NK_API void nk_glfw3_font_stash_end(void);
+NK_API void nk_glfw3_new_frame(void);
+NK_API void nk_glfw3_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer);
+
+NK_API void nk_glfw3_device_destroy(void);
+NK_API void nk_glfw3_device_create(void);
+
+NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint);
+NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff);
+NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods);
+
+#endif
+/*
+ * ==============================================================
+ *
+ * IMPLEMENTATION
+ *
+ * ===============================================================
+ */
+#ifdef NK_GLFW_GL3_IMPLEMENTATION
+
+#ifndef NK_GLFW_TEXT_MAX
+#define NK_GLFW_TEXT_MAX 256
+#endif
+#ifndef NK_GLFW_DOUBLE_CLICK_LO
+#define NK_GLFW_DOUBLE_CLICK_LO 0.02
+#endif
+#ifndef NK_GLFW_DOUBLE_CLICK_HI
+#define NK_GLFW_DOUBLE_CLICK_HI 0.2
+#endif
+
+struct nk_glfw_device {
+ struct nk_buffer cmds;
+ struct nk_draw_null_texture null;
+ GLuint vbo, vao, ebo;
+ GLuint prog;
+ GLuint vert_shdr;
+ GLuint frag_shdr;
+ GLint attrib_pos;
+ GLint attrib_uv;
+ GLint attrib_col;
+ GLint uniform_tex;
+ GLint uniform_proj;
+ GLuint font_tex;
+};
+
+struct nk_glfw_vertex {
+ float position[2];
+ float uv[2];
+ nk_byte col[4];
+};
+
+static struct nk_glfw {
+ GLFWwindow *win;
+ int width, height;
+ int display_width, display_height;
+ struct nk_glfw_device ogl;
+ struct nk_context ctx;
+ struct nk_font_atlas atlas;
+ struct nk_vec2 fb_scale;
+ unsigned int text[NK_GLFW_TEXT_MAX];
+ int text_len;
+ struct nk_vec2 scroll;
+ double last_button_click;
+ int is_double_click_down;
+ struct nk_vec2 double_click_pos;
+} glfw;
+
+#ifdef __APPLE__
+ #define NK_SHADER_VERSION "#version 150\n"
+#else
+ #define NK_SHADER_VERSION "#version 300 es\n"
+#endif
+
+NK_API void
+nk_glfw3_device_create(void)
+{
+ GLint status;
+ static const GLchar *vertex_shader =
+ NK_SHADER_VERSION
+ "uniform mat4 ProjMtx;\n"
+ "in vec2 Position;\n"
+ "in vec2 TexCoord;\n"
+ "in vec4 Color;\n"
+ "out vec2 Frag_UV;\n"
+ "out vec4 Frag_Color;\n"
+ "void main() {\n"
+ " Frag_UV = TexCoord;\n"
+ " Frag_Color = Color;\n"
+ " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
+ "}\n";
+ static const GLchar *fragment_shader =
+ NK_SHADER_VERSION
+ "precision mediump float;\n"
+ "uniform sampler2D Texture;\n"
+ "in vec2 Frag_UV;\n"
+ "in vec4 Frag_Color;\n"
+ "out vec4 Out_Color;\n"
+ "void main(){\n"
+ " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
+ "}\n";
+
+ struct nk_glfw_device *dev = &glfw.ogl;
+ nk_buffer_init_default(&dev->cmds);
+ dev->prog = glCreateProgram();
+ dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
+ dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
+ glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
+ glCompileShader(dev->vert_shdr);
+ glCompileShader(dev->frag_shdr);
+ glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
+ assert(status == GL_TRUE);
+ glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
+ assert(status == GL_TRUE);
+ glAttachShader(dev->prog, dev->vert_shdr);
+ glAttachShader(dev->prog, dev->frag_shdr);
+ glLinkProgram(dev->prog);
+ glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
+ assert(status == GL_TRUE);
+
+ dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
+ dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
+ dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
+ dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
+ dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
+
+ {
+ /* buffer setup */
+ GLsizei vs = sizeof(struct nk_glfw_vertex);
+ size_t vp = offsetof(struct nk_glfw_vertex, position);
+ size_t vt = offsetof(struct nk_glfw_vertex, uv);
+ size_t vc = offsetof(struct nk_glfw_vertex, col);
+
+ glGenBuffers(1, &dev->vbo);
+ glGenBuffers(1, &dev->ebo);
+ glGenVertexArrays(1, &dev->vao);
+
+ glBindVertexArray(dev->vao);
+ 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, vs, (void*)vp);
+ glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt);
+ glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc);
+ }
+
+ glBindTexture(GL_TEXTURE_2D, 0);
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+ glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindVertexArray(0);
+}
+
+NK_INTERN void
+nk_glfw3_device_upload_atlas(const void *image, int width, int height)
+{
+ struct nk_glfw_device *dev = &glfw.ogl;
+ glGenTextures(1, &dev->font_tex);
+ glBindTexture(GL_TEXTURE_2D, dev->font_tex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, image);
+}
+
+NK_API void
+nk_glfw3_device_destroy(void)
+{
+ struct nk_glfw_device *dev = &glfw.ogl;
+ glDetachShader(dev->prog, dev->vert_shdr);
+ glDetachShader(dev->prog, dev->frag_shdr);
+ glDeleteShader(dev->vert_shdr);
+ glDeleteShader(dev->frag_shdr);
+ glDeleteProgram(dev->prog);
+ glDeleteTextures(1, &dev->font_tex);
+ glDeleteBuffers(1, &dev->vbo);
+ glDeleteBuffers(1, &dev->ebo);
+ nk_buffer_free(&dev->cmds);
+}
+
+NK_API void
+nk_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
+{
+ struct nk_glfw_device *dev = &glfw.ogl;
+ struct nk_buffer vbuf, ebuf;
+ GLfloat ortho[4][4] = {
+ {2.0f, 0.0f, 0.0f, 0.0f},
+ {0.0f,-2.0f, 0.0f, 0.0f},
+ {0.0f, 0.0f,-1.0f, 0.0f},
+ {-1.0f,1.0f, 0.0f, 1.0f},
+ };
+ 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 */
+ glBindVertexArray(dev->vao);
+ 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 */
+ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
+ elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
+ {
+ /* fill convert configuration */
+ struct nk_convert_config config;
+ static const struct nk_draw_vertex_layout_element vertex_layout[] = {
+ {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)},
+ {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)},
+ {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)},
+ {NK_VERTEX_LAYOUT_END}
+ };
+ NK_MEMSET(&config, 0, sizeof(config));
+ config.vertex_layout = vertex_layout;
+ config.vertex_size = sizeof(struct nk_glfw_vertex);
+ config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex);
+ config.null = dev->null;
+ config.circle_segment_count = 22;
+ config.curve_segment_count = 22;
+ config.arc_segment_count = 22;
+ config.global_alpha = 1.0f;
+ config.shape_AA = AA;
+ config.line_AA = AA;
+
+ /* setup buffers to load vertices and elements */
+ 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);
+ }
+ glUnmapBuffer(GL_ARRAY_BUFFER);
+ glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
+
+ /* 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);
+ glBindVertexArray(0);
+ 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.x += (float)xoff;
+ glfw.scroll.y += (float)yoff;
+}
+
+NK_API void
+nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
+{
+ double x, y;
+ if (button != GLFW_MOUSE_BUTTON_LEFT) return;
+ glfwGetCursorPos(window, &x, &y);
+ if (action == GLFW_PRESS) {
+ double dt = glfwGetTime() - glfw.last_button_click;
+ if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) {
+ glfw.is_double_click_down = nk_true;
+ glfw.double_click_pos = nk_vec2((float)x, (float)y);
+ }
+ glfw.last_button_click = glfwGetTime();
+ } else glfw.is_double_click_down = nk_false;
+}
+
+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);
+ glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_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);
+ glfw.last_button_click = 0;
+ nk_glfw3_device_create();
+
+ glfw.is_double_click_down = nk_false;
+ glfw.double_click_pos = nk_vec2(0, 0);
+
+ 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]);
+
+#ifdef NK_GLFW_GL3_MOUSE_GRABBING
+ /* 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);
+#endif
+
+ 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_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
+ nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
+ nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS);
+ nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == 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_V) == 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);
+#ifdef NK_GLFW_GL3_MOUSE_GRABBING
+ 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;
+ }
+#endif
+ 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_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down);
+ nk_input_scroll(ctx, glfw.scroll);
+ nk_input_end(&glfw.ctx);
+ glfw.text_len = 0;
+ glfw.scroll = nk_vec2(0,0);
+}
+
+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