Dariaceli's Git
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Minor fix: spelling

Dario Rodriguez authored on 28/12/2023 12:18:57
Showing 1 changed files
annotator.c
History View file @ d94afce
... ... 
@@ -1,8 +1,8 @@
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 /*
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  * annotator.c
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  *
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- *  Annotates a image file containg a piano music sheet with the help of a human
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- * for use in the main program.
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+ *  Annotates an image file containg a piano music sheet with
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+ * the help of a human for use in the main program.
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  *
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  * Author: Dario Rodriguez <antartica@whereismybit.com>
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  * Please see the file LICENSE.txt in the sources root directory
Browse code

Create main window using boxui

Dario Rodriguez authored on 28/12/2023 12:16:42
Showing 1 changed files
annotator.c
History View file @ b82c6e4
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new file mode 100644
... ... 
@@ -0,0 +1,139 @@
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+/*
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+ * annotator.c
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+ *
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+ *  Annotates a image file containg a piano music sheet with the help of a human
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+ * for use in the main program.
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+ *
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+ * Author: Dario Rodriguez <antartica@whereismybit.com>
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+ * Please see the file LICENSE.txt in the sources root directory
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+ */
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+
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+#ifdef EMSCRIPTEN
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+#include <emscripten.h>
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+#endif
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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+#include <string.h>
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+#include <time.h>
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+#include <signal.h>
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+#include "boxui.h"
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+
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+#define DEFAULT_SCREENW 640
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+#define DEFAULT_SCREENH 480
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+
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+typedef struct mydata_t {
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+        int flag_exit;
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+        boxui_t *boxui;
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+} mydata_t;
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+
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+volatile int flag_sigint;
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+static void sigint(int n);
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+static int install_signal(int n,void (*f)(int));
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+
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+mydata_t *mydata_init(void);
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+void mydata_free(mydata_t *mydata);
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+int main_loop_iteration(mydata_t *mydata);
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+
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+int
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+main(int argc, char *argv[])
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+{
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+        mydata_t *mydata;
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+        if((mydata=mydata_init())==NULL) {
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+                DEBUG_FPRINTF((stderr,"Couldn't init\n"));
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+                return(-1); /* couldn't init */
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+        }
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+        flag_sigint=0;
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+        install_signal(SIGINT,sigint);
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+        while(flag_sigint==0 && mydata->flag_exit==0 && mydata->boxui!=NULL) {
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+#ifdef EMSCRIPTEN
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+                emscripten_set_main_loop_arg((void (*)(void *))main_loop_iteration,(void *) mydata,boxui_getfps(mydata->boxui),1);
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+#else
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+                main_loop_iteration(mydata);
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+#endif
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+        }
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+        mydata_free(mydata),mydata=NULL;
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+        return(0);
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+}
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+
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+static int
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+install_signal(int n,void (*f)(int))
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+{
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+#ifndef LINUX
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+        return(-1);
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+#else
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+        struct sigaction sact;
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+        sact.sa_handler=f;
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+        sigemptyset(&sact.sa_mask);
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+        sact.sa_flags=0;
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+        return(sigaction(n,&sact,0));
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+#endif
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+}
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+
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+static void
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+sigint(int n)
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+{
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+        flag_sigint++;
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+}
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+
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+mydata_t *
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+mydata_init(void)
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+{
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+        boxui_t *boxui;
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+        mydata_t *mydata;
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+        char *p;
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+        if((mydata=malloc(sizeof(mydata_t)))==NULL)
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+                return(NULL);
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+        memset(mydata,0,sizeof(mydata_t));
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+        if((mydata->boxui=boxui=boxui_init("Presto! Sight-Reading - Annotator",DEFAULT_SCREENW,DEFAULT_SCREENH,0))==NULL
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+          || boxui_setuserptr(boxui,mydata)!=0) {
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+                mydata_free(mydata),mydata=NULL;
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+                return(NULL);
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+        }
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+        /* initial UI config */
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+        p=boxui_add(boxui,_F,_L,"label:.l","-text \"(Here goes the music sheet)\"");
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+        boxui_pack(boxui,_F,_L,p,"-side top -fill both -expand true");
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+        return(mydata);
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+}
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+
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+void
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+mydata_free(mydata_t *mydata)
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+{
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+        boxui_t *boxui;
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+        if(mydata==NULL)
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+                return;
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+        if((boxui=mydata->boxui)!=NULL) {
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+                boxui_setuserptr(boxui,NULL);
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+                boxui_free(boxui),boxui=NULL,mydata->boxui=NULL;
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+        }
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+        free(mydata),mydata=NULL;
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+        return;
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+}
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+
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+int
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+main_loop_iteration(mydata_t *mydata)
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+{
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+        boxui_t *boxui;
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+        SDL_Event event;
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+        int keycode,neww,newh;
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+        char *actionstr,*actionparams;
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+        if(mydata==NULL || (boxui=mydata->boxui)==NULL)
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+                return(-1);
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+        boxui_tick(boxui);
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+        boxui_refreshevents(boxui);
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+        while(boxui_getevent(boxui,&event)==0) {
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+                /* standard events */
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+                if(boxui_event_isquit(boxui,&event))
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+                        mydata->flag_exit=1;
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+                if(boxui_event_iskeydown(boxui,&event,&keycode) && keycode==SDLK_ESCAPE)
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+                        mydata->flag_exit=1;
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+                if(boxui_event_isresize(boxui,&event,&neww,&newh))
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+                        boxui_resize(boxui,neww,newh);
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+        }
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+        while((actionstr=boxui_getactionstr(boxui,&actionparams))!=NULL) {
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+                if(strcmp(actionstr,"exit")==0)
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+                        mydata->flag_exit=1;
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+        }
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+        return(0);
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+}
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+