From: hackbard <hackbard>
Date: Fri, 21 May 2004 08:35:00 +0000 (+0000)
Subject: partial display improvements, to be continued (wont compile)
X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Fivac.git;a=commitdiff_plain;h=3830fbef8513acf7689afa26c5dfeca68ba4900c

partial display improvements, to be continued (wont compile)
---

diff --git a/src/display.c b/src/display.c
index 89c6472..afb2a57 100644
--- a/src/display.c
+++ b/src/display.c
@@ -10,42 +10,92 @@ int display_init(t_display *display) {
 
   puts("[display] initializing display ...");
 
-  /* init stuff next .. */
+  /* dimensions */
   display->max_x=atoi(getenv("COLUMNS"));
   display->max_y=atoi(getenv("LINES"));
 
+  /* allocating 'screen' buffer */
+  if((display->screen=(unsigned char *)malloc(display->max_x*display->max_y))
+     ==NULL) {
+    perror("[display] malloc call");
+    return D_ERROR;
+  }
+  /* space as display pixel default */
+  memset(display->screen,0x20,display->max_x*display->max_y);
+
   return D_SUCCESS;
 }
 
-int display_refresh(t_display *display) {
+int display_draw(t_display *display) {
 
-  display->max_x=atoi(getenv("COLUMNS"));
-  display->max_y=atoi(getenv("LINES"));
+  int x,y;
+
+  for(y=0;y<display->max_y;y++) {
+    for(x=0;x<display->max_x;x++)
+      printf("%c",display->screen+y*display->max_x+x);
+    printf("\n");
+  }
+
+  return D_SUCCESS;
+}
+
+int display_draw_until_line(t_display *display,int line) {
+  
+  int x,y;
+
+  for(x=0;x<display->max_x;x++) {
+    for(y=0;y<line;y++) printf("%c",display->screen+y*display->max_x+x);
+  printf("\n");
+  }
+
+  return D_SUCCESS;
+}
+
+int display_clear_screen(t_display *display) {
+ 
+  memcpy(display->screen,0x20,display->max_x*display->max_y);
 
   return D_SUCCESS;
 }
 
 int display_shutdown(t_display *display) {
 
+  free(display->screen);
+
   puts("[display] shutdown");
 
   return D_SUCCESS;
 }
 
-int display_term_line(t_display *display,char sym) {
+int display_line(t_display *display,int X,int Y,int X_,int Y_,char sym) {
 
-  int i;
+  double m;
+  int x,y;
 
-  for(i=0;i<display->max_x;i++) printf("%c",sym);
-  printf("\n");
+  m=(Y_-Y)/(X_-X);
+
+  for(y=0;y<display->max_y;y++)
+    for(x=0;x<display->max_x;x++)
+      if((int)((x-X)*m+Y)==y) display->screen+y*display->max_x+x=sym;
 
   return D_SUCCESS;
 }
 
-int display_term_string(t_display *display,char *string) {
+int display_string(t_display *display,int x,int y,char *string,int len) {
+
+  if(len>display->max_x-x) return D_INV_STRING_LEN;
 
-  /* to be continued ... */
+  memcpy(display->screen+y*display->max_x+x,string,len);
 
   return D_SUCCESS;
 }
 
+int display_string_vert(t_display *display,int x,int y,char *string,int len) {
+
+  if(len>display->max_y-y) return D_INV_STRING_LEN;
+
+  for(i=y*display->max_x+x;i<(y+len)*display->max_x+x;i+=display->max_x)
+    *(display->screen+i)=*(string++);
+
+  return D_SUCCESS;
+}
diff --git a/src/display.h b/src/display.h
index a12f380..ed89a17 100644
--- a/src/display.h
+++ b/src/display.h
@@ -7,6 +7,7 @@
 /* defines */
 #define D_SUCCESS 1
 #define D_ERROR -1
+#define D_INV_STRING_LEN -2
 
 #define MAX_TERM_STRING 64
 
@@ -18,13 +19,15 @@
 typedef struct s_display {
   int max_x;
   int max_y;
-  int x;
-  int y;
+  unsigned char *screen;
 } t_display;
 
 /* function prototypes */
 int display_init(t_display *display);
-int display_refresh(t_display *display);
+int display_draw(t_display *display);
+int int display_draw_until_line(t_display *display,int line);
+int display_clear_screen(t_display *display);
 int display_shutdown(t_display *display);
-int display_term_line(t_display *display,char sym);
-int display_term_string(t_display *display,char *string);
+int display_line(t_display *display,int X,int Y,int X_,int Y_,char sym);
+int display_string(t_display *display,int x,int y,char *string,int len);
+int display_string_vert(t_display *display,int x,int y,char *string,int len);
diff --git a/src/ivac.c b/src/ivac.c
index 60338ee..9167660 100644
--- a/src/ivac.c
+++ b/src/ivac.c
@@ -472,15 +472,16 @@ int ivac_parse_command(t_input *input,void *ptr) {
 
 int ivac_display_head(t_ivac *ivac) {
 
-#ifndef XXX_GUI
-  display_term_line(&(ivac->display),'#');
-  puts("##### ivac - -  Copyright (C) 2004 Frank Zirkelbach #####");
-  puts("#########################################################");
-#endif
+  display_line(&(ivac->display),0,ivac->display.max_x,0,0,'#');
+  display_string(&(ivac->display),(display->max_x-strlen(PROG_NAME))/2,2,
+                 PROG_NAME,strlen(PROG_NAME));
+  display_line(&(ivac->display),0,ivac->display.max_x,2,2,'#');
 
   return SUCCESS;
 }
 
+GO ON HERE !!! display stuff
+
 int ivac_display_box(t_ivac *ivac) {
 
 #ifndef XXX_GUI
diff --git a/src/ivac.h b/src/ivac.h
index af2932b..d073592 100644
--- a/src/ivac.h
+++ b/src/ivac.h
@@ -14,6 +14,7 @@
 #include "audio.h"
 
 /* defines */
+#define PROG_NAME "ivac -- Copyright (C) 2004 Frank Zirkelbach"
 #define CHAR_USERNAME 32
 #define ERROR -1
 #define SUCCESS 1