mirrors
/
Nuklear
mirror of https://github.com/Immediate-Mode-UI/Nuklear
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added additional SDL/GLFW OpenGL 2.2 demo

This commit is contained in:
vurtun 2016-04-29 14:07:08 +02:00
parent 154ffb1133
commit 389176ef4b
12 changed files with 986 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
demo/glfw_opengl2/Makefile Normal file
View File

@ -0,0 +1,25 @@
# 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
else
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Darwin)
LIBS = -lglfw3 -framework OpenGL -lm
else
LIBS = -lglfw -lGL -lm -lGLU
endif
endif
$(BIN):
@mkdir -p bin
rm -f bin/$(BIN) $(OBJS)
$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)

163
demo/glfw_opengl2/main.c Normal file
View File

@ -0,0 +1,163 @@
/* nuklear - v1.00 - 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 <GLFW/glfw3.h>
/* these defines are both needed for the header
* and source file. So if you split them remember
* to copy them as well. */
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#include "nuklear_glfw.h"
#include "nuklear_glfw.c"
#define WINDOW_WIDTH 1200
#define WINDOW_HEIGHT 800
#define MAX_VERTEX_BUFFER 512 * 1024
#define MAX_ELEMENT_BUFFER 128 * 1024
#define UNUSED(a) (void)a
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) < (b) ? (b) : (a))
#define LEN(a) (sizeof(a)/sizeof(a)[0])
/* ===============================================================
*
* 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 include
* and the corresponding function. */
/*#include "../style.c"*/
/*#include "../calculator.c"*/
/*#include "../overview.c"*/
/*#include "../node_editor.c"*/
/* ===============================================================
*
* 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_color background;
/* GLFW */
glfwSetErrorCallback(error_callback);
if (!glfwInit()) {
fprintf(stdout, "[GFLW] failed to init!\n");
exit(1);
}
win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
glfwMakeContextCurrent(win);
glfwGetWindowSize(win, &width, &height);
/* GUI */
ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS);
/* Load Fonts: if none of these are loaded a default font will be used */
{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_set_font(ctx, &droid->handle);*/}
/* style.c */
/*set_style(ctx, THEME_WHITE);*/
/*set_style(ctx, THEME_RED);*/
/*set_style(ctx, THEME_BLUE);*/
/*set_style(ctx, THEME_DARK);*/
background = nk_rgb(28,48,62);
while (!glfwWindowShouldClose(win))
{
/* Input */
glfwPollEvents();
nk_glfw3_new_frame();
/* GUI */
{struct nk_panel layout;
if (nk_begin(ctx, &layout, "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", NK_BUTTON_DEFAULT))
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);
{struct nk_panel combo;
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, &combo, background, 400)) {
nk_layout_row_dynamic(ctx, 120, 1);
background = nk_color_picker(ctx, background, NK_RGBA);
nk_layout_row_dynamic(ctx, 25, 1);
background.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, background.r, 255, 1,1);
background.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, background.g, 255, 1,1);
background.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, background.b, 255, 1,1);
background.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, background.a, 255, 1,1);
nk_combo_end(ctx);
}}
}
nk_end(ctx);}
/* -------------- EXAMPLES ---------------- */
/*calculator(ctx);*/
/*overview(ctx);*/
/*node_editor(ctx);*/
/* ----------------------------------------- */
/* Draw */
{float bg[4];
nk_color_fv(bg, background);
glfwGetWindowSize(win, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(bg[0], bg[1], bg[2], bg[3]);
/* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state
* with blending, scissor, face culling and depth test and defaults everything
* back into a default state. Make sure to either save and restore or
* reset your own state after drawing rendering the UI. */
nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
glfwSwapBuffers(win);}
}
nk_glfw3_shutdown();
glfwTerminate();
return 0;
}

287
demo/glfw_opengl2/nuklear_glfw.c Normal file
View File

@ -0,0 +1,287 @@
#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 <time.h>
#include <limits.h>
#define NK_IMPLEMENTATION
#include "nuklear_glfw.h"
#include "../../nuklear.h"
#define NK_GLFW_TEXT_MAX 256
struct nk_glfw_device {
struct nk_buffer cmds;
struct nk_draw_null_texture null;
GLuint font_tex;
};
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;
float scroll;
} glfw;
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_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
{
/* setup global state */
struct nk_glfw_device *dev = &glfw.ogl;
glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* setup viewport/project */
glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f, glfw.width, glfw.height, 0.0f, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
{
GLsizei vs = sizeof(struct nk_draw_vertex);
size_t vp = offsetof(struct nk_draw_vertex, position);
size_t vt = offsetof(struct nk_draw_vertex, uv);
size_t vc = offsetof(struct nk_draw_vertex, col);
/* convert from command queue into draw list and draw to screen */
const struct nk_draw_command *cmd;
const nk_draw_index *offset = NULL;
struct nk_buffer vbuf, ebuf;
/* 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;
/* convert shapes into vertexes */
nk_buffer_init_default(&vbuf);
nk_buffer_init_default(&ebuf);
nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config);
/* setup vertex buffer pointer */
{const void *vertices = nk_buffer_memory_const(&vbuf);
glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp));
glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt));
glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));}
/* iterate over and execute each draw command */
offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
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.display_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);
nk_buffer_free(&vbuf);
nk_buffer_free(&ebuf);
}
/* default OpenGL state */
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
}
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;
}
static 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;
}
static void
nk_glfw3_clipbard_copy(nk_handle usr, const char *text, int len)
{
char *str = 0;
(void)usr;
if (!len) return;
str = 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_buffer_init_default(&glfw.ogl.cmds);
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]);
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)) {
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);
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)
{
struct nk_glfw_device *dev = &glfw.ogl;
nk_font_atlas_clear(&glfw.atlas);
nk_free(&glfw.ctx);
glDeleteTextures(1, &dev->font_tex);
nk_buffer_free(&dev->cmds);
memset(&glfw, 0, sizeof(glfw));
}

20
demo/glfw_opengl2/nuklear_glfw.h Normal file
View File

@ -0,0 +1,20 @@
#ifndef NK_GLFW_H_
#define NK_GLFW_H_
#include "../../nuklear.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_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_shutdown(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);
#endif

7
demo/glfw_opengl3/main.c
View File

@ -164,9 +164,10 @@ int main(void)
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(bg[0], bg[1], bg[2], bg[3]);
/* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state
* with blending, scissor, face culling and depth test and defaults everything
* back into a default state. Make sure to either save and restore or
* reset your own state after drawing rendering the UI. */
* 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);}
}

3
demo/glfw_opengl3/nuklear_glfw.c
View File

@ -230,7 +230,7 @@ nk_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element
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)((glfw.display_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);
@ -386,5 +386,6 @@ void nk_glfw3_shutdown(void)
nk_font_atlas_clear(&glfw.atlas);
nk_free(&glfw.ctx);
nk_glfw3_device_destroy();
memset(&glfw, 0, sizeof(glfw));
}

25
demo/sdl_opengl2/Makefile Normal file
View File

@ -0,0 +1,25 @@
# Install
BIN = demo
# Flags
CFLAGS = -std=c99 -pedantic -O2
SRC = main.c
OBJ = $(SRC:.c=.o)
ifeq ($(OS),Windows_NT)
BIN := $(BIN).exe
LIBS = -lmingw32 -lSDL2main -lSDL2 -lopengl32 -lm -lGLU32
else
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Darwin)
LIBS = -lSDL2 -framework OpenGL -lm
else
LIBS = -lSDL2 -lGL -lm -lGLU
endif
endif
$(BIN):
@mkdir -p bin
rm -f bin/$(BIN) $(OBJS)
$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)

173
demo/sdl_opengl2/main.c Normal file
View File

@ -0,0 +1,173 @@
/* nuklear - v1.00 - 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 <SDL2/SDL.h>
#include <SDL2/SDL_opengl.h>
/* these defines are both needed for the header
* and source file. So if you split them remember
* to copy them as well. */
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#include "nuklear_sdl.h"
#include "nuklear_sdl.c"
#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600
#define MAX_VERTEX_MEMORY 512 * 1024
#define MAX_ELEMENT_MEMORY 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 include
* and the corresponding function. */
/*#include "../style.c"*/
/*#include "../calculator.c"*/
/*#include "../overview.c"*/
/*#include "../node_editor.c"*/
/* ===============================================================
*
* DEMO
*
* ===============================================================*/
int
main(int argc, char* argv[])
{
/* Platform */
SDL_Window *win;
SDL_GLContext glContext;
struct nk_color background;
int win_width, win_height;
int running = 1;
/* GUI */
struct nk_context *ctx;
/* SDL setup */
SDL_Init(SDL_INIT_VIDEO);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
win = SDL_CreateWindow("Demo",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN);
glContext = SDL_GL_CreateContext(win);
SDL_GetWindowSize(win, &win_width, &win_height);
/* GUI */
ctx = nk_sdl_init(win);
/* Load Fonts: if none of these are loaded a default font will be used */
{struct nk_font_atlas *atlas;
nk_sdl_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", 16, 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_sdl_font_stash_end();
/*nk_style_set_font(ctx, &roboto->handle)*/;}
/* style.c */
/*set_style(ctx, THEME_WHITE);*/
/*set_style(ctx, THEME_RED);*/
/*set_style(ctx, THEME_BLUE);*/
/*set_style(ctx, THEME_DARK);*/
background = nk_rgb(28,48,62);
while (running)
{
/* Input */
SDL_Event evt;
nk_input_begin(ctx);
while (SDL_PollEvent(&evt)) {
if (evt.type == SDL_QUIT) goto cleanup;
nk_sdl_handle_event(&evt);
}
nk_input_end(ctx);
/* GUI */
{struct nk_panel layout;
if (nk_begin(ctx, &layout, "Demo", nk_rect(50, 50, 210, 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", NK_BUTTON_DEFAULT))
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);
{struct nk_panel combo;
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, &combo, background, 400)) {
nk_layout_row_dynamic(ctx, 120, 1);
background = nk_color_picker(ctx, background, NK_RGBA);
nk_layout_row_dynamic(ctx, 25, 1);
background.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, background.r, 255, 1,1);
background.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, background.g, 255, 1,1);
background.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, background.b, 255, 1,1);
background.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, background.a, 255, 1,1);
nk_combo_end(ctx);
}}
}
nk_end(ctx);}
/* -------------- EXAMPLES ---------------- */
/*calculator(ctx);*/
/*overview(ctx);*/
/*node_editor(ctx);*/
/* ----------------------------------------- */
/* Draw */
{float bg[4];
nk_color_fv(bg, background);
SDL_GetWindowSize(win, &win_width, &win_height);
glViewport(0, 0, win_width, win_height);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(bg[0], bg[1], bg[2], bg[3]);
/* IMPORTANT: `nk_sdl_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_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY);
SDL_GL_SwapWindow(win);}
}
cleanup:
nk_sdl_shutdown();
SDL_GL_DeleteContext(glContext);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}

269
demo/sdl_opengl2/nuklear_sdl.c Normal file
View File

@ -0,0 +1,269 @@
#include <string.h>
#include <SDL2/SDL.h>
#include "nuklear_sdl.h"
#define NK_IMPLEMENTATION
#include "../../nuklear.h"
struct nk_sdl_device {
struct nk_buffer cmds;
struct nk_draw_null_texture null;
GLuint font_tex;
};
static struct nk_sdl {
SDL_Window *win;
struct nk_sdl_device ogl;
struct nk_context ctx;
struct nk_font_atlas atlas;
} sdl;
NK_INTERN void
nk_sdl_device_upload_atlas(const void *image, int width, int height)
{
struct nk_sdl_device *dev = &sdl.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_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
{
/* setup global state */
struct nk_sdl_device *dev = &sdl.ogl;
int width, height;
int display_width, display_height;
struct nk_vec2 scale;
SDL_GetWindowSize(sdl.win, &width, &height);
SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height);
scale.x = (float)display_width/(float)width;
scale.y = (float)display_height/(float)height;
glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* setup viewport/project */
glViewport(0,0,(GLsizei)display_width,(GLsizei)display_height);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
{
GLsizei vs = sizeof(struct nk_draw_vertex);
size_t vp = offsetof(struct nk_draw_vertex, position);
size_t vt = offsetof(struct nk_draw_vertex, uv);
size_t vc = offsetof(struct nk_draw_vertex, col);
/* convert from command queue into draw list and draw to screen */
const struct nk_draw_command *cmd;
const nk_draw_index *offset = NULL;
struct nk_buffer vbuf, ebuf;
/* 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;
/* convert shapes into vertexes */
nk_buffer_init_default(&vbuf);
nk_buffer_init_default(&ebuf);
nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);
/* setup vertex buffer pointer */
{const void *vertices = nk_buffer_memory_const(&vbuf);
glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp));
glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt));
glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));}
/* iterate over and execute each draw command */
offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds)
{
if (!cmd->elem_count) continue;
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
glScissor(
(GLint)(cmd->clip_rect.x * scale.x),
(GLint)((display_height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
(GLint)(cmd->clip_rect.w * scale.x),
(GLint)(cmd->clip_rect.h * scale.y));
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
offset += cmd->elem_count;
}
nk_clear(&sdl.ctx);
nk_buffer_free(&vbuf);
nk_buffer_free(&ebuf);
}
/* default OpenGL state */
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
}
static void
nk_sdl_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
{
const char *text = SDL_GetClipboardText();
if (text) nk_textedit_paste(edit, text, nk_strlen(text));
(void)usr;
}
static void
nk_sdl_clipbard_copy(nk_handle usr, const char *text, int len)
{
char *str = 0;
(void)usr;
if (!len) return;
str = malloc((size_t)len+1);
if (!str) return;
memcpy(str, text, (size_t)len);
str[len] = '\0';
SDL_SetClipboardText(str);
free(str);
}
NK_API struct nk_context*
nk_sdl_init(SDL_Window *win)
{
sdl.win = win;
nk_init_default(&sdl.ctx, 0);
sdl.ctx.clip.copy = nk_sdl_clipbard_copy;
sdl.ctx.clip.paste = nk_sdl_clipbard_paste;
sdl.ctx.clip.userdata = nk_handle_ptr(0);
nk_buffer_init_default(&sdl.ogl.cmds);
return &sdl.ctx;
}
NK_API void
nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
{
nk_font_atlas_init_default(&sdl.atlas);
nk_font_atlas_begin(&sdl.atlas);
*atlas = &sdl.atlas;
}
NK_API void
nk_sdl_font_stash_end(void)
{
const void *image; int w, h;
image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
nk_sdl_device_upload_atlas(image, w, h);
nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null);
if (sdl.atlas.default_font)
nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
}
NK_API void
nk_sdl_handle_event(SDL_Event *evt)
{
struct nk_context *ctx = &sdl.ctx;
if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) {
/* key events */
int down = evt->type == SDL_KEYDOWN;
const Uint8* state = SDL_GetKeyboardState(0);
SDL_Keycode sym = evt->key.keysym.sym;
if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT)
nk_input_key(ctx, NK_KEY_SHIFT, down);
else if (sym == SDLK_DELETE)
nk_input_key(ctx, NK_KEY_DEL, down);
else if (sym == SDLK_RETURN)
nk_input_key(ctx, NK_KEY_ENTER, down);
else if (sym == SDLK_TAB)
nk_input_key(ctx, NK_KEY_TAB, down);
else if (sym == SDLK_BACKSPACE)
nk_input_key(ctx, NK_KEY_BACKSPACE, down);
else if (sym == SDLK_HOME)
nk_input_key(ctx, NK_KEY_TEXT_START, down);
else if (sym == SDLK_END)
nk_input_key(ctx, NK_KEY_TEXT_END, down);
else if (sym == SDLK_z)
nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_r)
nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_c)
nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_v)
nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_x)
nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_b)
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_e)
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_LEFT) {
if (state[SDL_SCANCODE_LCTRL])
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
else nk_input_key(ctx, NK_KEY_LEFT, down);
} else if (sym == SDLK_RIGHT) {
if (state[SDL_SCANCODE_LCTRL])
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
else nk_input_key(ctx, NK_KEY_RIGHT, down);
}
} else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) {
/* mouse button */
int down = evt->type == SDL_MOUSEBUTTONDOWN;
const int x = evt->button.x, y = evt->button.y;
if (evt->button.button == SDL_BUTTON_LEFT)
nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
if (evt->button.button == SDL_BUTTON_MIDDLE)
nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
if (evt->button.button == SDL_BUTTON_RIGHT)
nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
} else if (evt->type == SDL_MOUSEMOTION) {
nk_input_motion(ctx, evt->motion.x, evt->motion.y);
} else if (evt->type == SDL_TEXTINPUT) {
nk_glyph glyph;
memcpy(glyph, evt->text.text, NK_UTF_SIZE);
nk_input_glyph(ctx, glyph);
} else if (evt->type == SDL_MOUSEWHEEL) {
nk_input_scroll(ctx,(float)evt->wheel.y);
}
}
NK_API
void nk_sdl_shutdown(void)
{
struct nk_sdl_device *dev = &sdl.ogl;
nk_font_atlas_clear(&sdl.atlas);
nk_free(&sdl.ctx);
glDeleteTextures(1, &dev->font_tex);
nk_buffer_free(&dev->cmds);
memset(&sdl, 0, sizeof(sdl));
}

15
demo/sdl_opengl2/nuklear_sdl.h Normal file
View File

@ -0,0 +1,15 @@
#ifndef NK_SDL_H_
#define NK_SDL_H_
#include "../../nuklear.h"
#include <SDL2/SDL.h>
NK_API struct nk_context *nk_sdl_init(SDL_Window *win);
NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas);
NK_API void nk_sdl_font_stash_end(void);
NK_API void nk_sdl_handle_event(SDL_Event *evt);
NK_API void nk_sdl_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer);
NK_API void nk_sdl_shutdown(void);
#endif

3
demo/sdl_opengl3/nuklear_sdl.c
View File

@ -221,7 +221,7 @@ nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_b
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
glScissor(
(GLint)(cmd->clip_rect.x * scale.x),
(GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
(GLint)((display_height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
(GLint)(cmd->clip_rect.w * scale.x),
(GLint)(cmd->clip_rect.h * scale.y));
@ -366,5 +366,6 @@ void nk_sdl_shutdown(void)
nk_font_atlas_clear(&sdl.atlas);
nk_free(&sdl.ctx);
nk_sdl_device_destroy();
memset(&sdl, 0, sizeof(sdl));
}

1
demo/x11/nuklear_xlib.c
View File

@ -523,6 +523,7 @@ nk_xlib_shutdown(void)
{
nk_xsurf_del(xlib.surf);
nk_free(&xlib.ctx);
memset(&xlib, 0, sizeof(xlib));
}
NK_API void