From a8be0d3d20f07d4561826b01f566ca307eb23526 Mon Sep 17 00:00:00 2001
From: erdgeist <erdgeist@bauklotz.fritz.box>
Date: Fri, 12 Aug 2016 14:46:51 +0200
Subject: commit as a backup

---
 display.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 display.c

(limited to 'display.c')

diff --git a/display.c b/display.c
new file mode 100644
index 0000000..42235a2
--- /dev/null
+++ b/display.c
@@ -0,0 +1,123 @@
+#include "SDL2/SDL.h"
+#include "SDL2/SDL2_gfxPrimitives.h"
+#include <SDL2/SDL_ttf.h>
+
+#include "GenBkBasB.h"
+#include "display.h"
+
+#define display_measure_text(text,w,h) TTF_SizeText(font,(text),(w),(h))
+
+static SDL_Window *screen;
+static SDL_Renderer *renderer;
+static int g_width, g_height;
+static TTF_Font *font = NULL;
+
+void
+display_init(int width, int height)
+{
+        SDL_RWops *font_file;
+
+        g_width = width;
+        g_height = height;
+
+        if (SDL_Init(SDL_INIT_EVERYTHING) == -1) {
+                fprintf(stderr, "Can't initialize SDL.\n");
+                exit(1);
+        }
+        screen = SDL_CreateWindow("Laserharfe", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, SDL_WINDOW_OPENGL);
+        if (!screen) {
+                fprintf(stderr, "Can't set video mode.\n");
+                exit(1);
+        }
+        renderer = SDL_CreateRenderer(screen, -1, 0);
+
+        SDL_RenderClear(renderer);
+
+        TTF_Init();
+        font_file = SDL_RWFromConstMem(GenBkBasB_ttf, GenBkBasB_ttf_len);
+        font = TTF_OpenFontRW(font_file, 1, 28);
+}
+
+void
+display_clear()
+{
+        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+        SDL_RenderClear(renderer);
+}
+
+void
+display_circle(int x, int y, int w)
+{
+        if (x >= 0 && x < g_width && y >= 0 && y < g_height)
+                display_circle_color(x, y, w, 0xffffffff);
+}
+
+void
+display_circle_color(int x, int y, int w, int color)
+{
+        filledCircleColor(renderer, x, y, w, color);
+}
+
+void
+display_line(int x0, int y0, int x1, int y1)
+{
+        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
+        SDL_RenderDrawLine(renderer, x0, y0, x1, y1);
+}
+
+void
+display_line_color(int x0, int y0, int x1, int y1, int color)
+{
+        SDL_SetRenderDrawColor(renderer, (color >> 24) & 255, (color >> 16) & 255, (color >> 8) & 255, 255);
+        SDL_RenderDrawLine(renderer, x0, y0, x1, y1);
+}
+
+void
+display_redraw()
+{
+        SDL_RenderPresent(renderer);
+}
+
+void
+display_text(char *text, int x, int y, int color)
+{
+        SDL_Color s_color = { 255 & (color>>24), 255 & (color>>16), 255 & (color>>8) };
+        SDL_Surface *sText = TTF_RenderText_Solid(font, text, s_color);
+        SDL_Rect rect = {x, y, sText->w, sText->h};
+        SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, sText);
+
+        SDL_RenderCopy(renderer, texture, NULL, &rect);
+        SDL_DestroyTexture(texture);
+        SDL_FreeSurface(sText);
+}
+
+void
+display_textbox(int min_x, int pos, int max_x, int max_pos, char *text, int color)
+{
+        int w, h, min_y, item_height;
+
+        display_measure_text("#", &w, &h);
+        item_height = 3 * h / 2;
+        min_y = (g_height - item_height * max_pos) / 2 + pos * item_height;
+
+        //boxColor(screen, min_x, min_y, max_x, min_y + item_height, color);
+        //rectangleColor(screen, min_x, min_y, max_x, min_y + item_height, 0xffffffff);
+        display_measure_text(text, &w, &h);
+        display_text(text, min_x + (max_x - min_x - w) / 2, min_y + (item_height - h) / 2, 0xffffffff);
+}
+
+int
+display_test_menu_click(int y, int max_pos)
+{
+        int w, h, min_y, item_height;
+
+/*
+  display_measure_text( "#", &w, &h );
+  item_height = 3 * h / 2;
+  min_y = ( g_height - item_height * max_pos ) / 2;
+  if( y < min_y ) return -1;
+  if( y > min_y + item_height * max_pos ) return -1;
+  return ( y - min_y ) / item_height;
+*/
+        return 0;
+}
-- 
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