142 lines
3.2 KiB
C
142 lines
3.2 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <math.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
|
|
#include <GLES3/gl3.h>
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
|
|
#include "nanovg.h"
|
|
#define NANOVG_GLES3_IMPLEMENTATION
|
|
#include "nanovg_gl.h"
|
|
#include "nanovg_gl_utils.h"
|
|
|
|
|
|
#include "common/framebuffer.h"
|
|
#include "common/touch.h"
|
|
|
|
|
|
#define COLOR_WHITE nvgRGBA(255, 255, 255, 255)
|
|
#define MAX_TEXT_SIZE 2048
|
|
|
|
extern const unsigned char _binary_opensans_regular_ttf_start[];
|
|
extern const unsigned char _binary_opensans_regular_ttf_end[];
|
|
|
|
static void set_brightness(int brightness) {
|
|
FILE *f = fopen("/sys/class/leds/lcd-backlight/brightness", "wb");
|
|
if (f != NULL) {
|
|
fprintf(f, "%d", brightness);
|
|
fclose(f);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
int err;
|
|
|
|
// spinner
|
|
int fb_w, fb_h;
|
|
FramebufferState *fb = framebuffer_init("text", 0x00001000, false,
|
|
&fb_w, &fb_h);
|
|
assert(fb);
|
|
|
|
NVGcontext *vg = nvgCreateGLES3(NVG_ANTIALIAS | NVG_STENCIL_STROKES);
|
|
assert(vg);
|
|
|
|
int font = nvgCreateFontMem(vg, "regular", (unsigned char*)_binary_opensans_regular_ttf_start, _binary_opensans_regular_ttf_end-_binary_opensans_regular_ttf_start, 0);
|
|
assert(font >= 0);
|
|
|
|
// Awake
|
|
framebuffer_set_power(fb, HWC_POWER_MODE_NORMAL);
|
|
set_brightness(255);
|
|
|
|
glClearColor(0.1, 0.1, 0.1, 1.0);
|
|
glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
nvgBeginFrame(vg, fb_w, fb_h, 1.0f);
|
|
|
|
// background
|
|
nvgBeginPath(vg);
|
|
NVGpaint bg = nvgLinearGradient(vg, fb_w, 0, fb_w, fb_h,
|
|
nvgRGBA(0, 0, 0, 175), nvgRGBA(0, 0, 0, 255));
|
|
nvgFillPaint(vg, bg);
|
|
nvgRect(vg, 0, 0, fb_w, fb_h);
|
|
nvgFill(vg);
|
|
|
|
|
|
// Text
|
|
nvgFillColor(vg, COLOR_WHITE);
|
|
nvgFontSize(vg, 75.0f);
|
|
|
|
if (argc >= 2) {
|
|
float x = 150;
|
|
float y = 150;
|
|
|
|
// Copy text
|
|
char * text = malloc(MAX_TEXT_SIZE);
|
|
strncpy(text, argv[1], MAX_TEXT_SIZE);
|
|
|
|
float lineh;
|
|
nvgTextMetrics(vg, NULL, NULL, &lineh);
|
|
|
|
// nvgTextBox strips leading whitespace. We have to reimplement
|
|
char * next = strtok(text, "\n");
|
|
while (next != NULL){
|
|
nvgText(vg, x, y, next, NULL);
|
|
y += lineh;
|
|
next = strtok(NULL, "\n");
|
|
}
|
|
}
|
|
|
|
// Button
|
|
int b_x = 1500;
|
|
int b_y = 800;
|
|
int b_w = 300;
|
|
int b_h = 150;
|
|
|
|
nvgBeginPath(vg);
|
|
nvgFillColor(vg, nvgRGBA(8, 8, 8, 255));
|
|
nvgRoundedRect(vg, b_x, b_y, b_w, b_h, 20);
|
|
nvgFill(vg);
|
|
|
|
nvgFillColor(vg, nvgRGBA(255, 255, 255, 255));
|
|
nvgTextAlign(vg, NVG_ALIGN_CENTER | NVG_ALIGN_MIDDLE);
|
|
nvgText(vg, b_x+b_w/2, b_y+b_h/2, "Exit", NULL);
|
|
|
|
nvgBeginPath(vg);
|
|
nvgStrokeColor(vg, nvgRGBA(255, 255, 255, 50));
|
|
nvgStrokeWidth(vg, 5);
|
|
nvgRoundedRect(vg, b_x, b_y, b_w, b_h, 20);
|
|
nvgStroke(vg);
|
|
|
|
// Draw to screen
|
|
nvgEndFrame(vg);
|
|
framebuffer_swap(fb);
|
|
assert(glGetError() == GL_NO_ERROR);
|
|
|
|
|
|
// Wait for button
|
|
TouchState touch;
|
|
touch_init(&touch);
|
|
|
|
while (true){
|
|
int touch_x = -1, touch_y = -1;
|
|
int res = touch_poll(&touch, &touch_x, &touch_y, 0);
|
|
if (res){
|
|
|
|
if (touch_x > b_x && touch_x < b_x + b_w){
|
|
if (touch_y > b_y && touch_y < b_y + b_h){
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
usleep(1000000 / 60);
|
|
}
|
|
|
|
return 0;
|
|
}
|