kolibrios-fun/programs/cmm/lib/draw_buf.h
Kirill Lipatov (Leency) 132591b85f WebView 3.2:
- improve image positioning: inline images, various line height
- revert 8443 and fix into enother way
- proceed colors without hash symbol

git-svn-id: svn://kolibrios.org@8451 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-12-19 00:50:55 +00:00

155 lines
3.7 KiB
C

#ifndef INCLUDE_DRAW_BUF_H
#define INCLUDE_DRAW_BUF_H
#print "[include <draw_buf.h>]\n"
#ifndef INCLUDE_KOLIBRI_H
#include "../lib/kolibri.h"
#endif
dword buf_data=0;
struct CANVAS {
dword bufx, bufy, bufw, bufh;
dword fill_color;
bool Init();
void Show();
void Fill();
void DrawBar();
void WriteText();
void PutPixel();
void AlignCenter();
void AlignRight();
void IncreaseBufSize();
};
char draw_buf_not_enaught_ram[] =
"'CANVAS requested %i MB more memory than the system has.
Application could be unstable.' -E";
bool CANVAS::Init(dword i_bufx, i_bufy, i_bufw, i_bufh)
{
bufx = i_bufx;
bufy = i_bufy;
bufw = i_bufw;
bufh = i_bufh;
if (buf_data) buf_data = free(buf_data);
IncreaseBufSize();
if (!buf_data) return false;
ESDWORD[buf_data] = bufw;
ESDWORD[buf_data+4] = bufh;
return true;
}
void CANVAS::Fill(dword start_pointer, i_fill_color)
{
dword max_i = bufw * bufh * 4 - start_pointer/4;
fill_color = i_fill_color | 0xFF000000; //set background color non-transparent
@MEMSETD(buf_data+start_pointer+8, max_i, fill_color);
}
void CANVAS::DrawBar(dword x, y, w, h, color)
{
dword i, j;
if (y + h >= bufh) IncreaseBufSize();
for (j=0; j<h; j++) {
for (i = y+j*bufw+x<<2+8+buf_data; i<y+j*bufw+x+w<<2+8+buf_data; i+=4) {
ESDWORD[i] = color;
}
}
}
void CANVAS::WriteText(dword x, y, byte fontType, dword color, str_offset, strlen)
{
#define BUGFIX_32000 32000
dword ydiv=0;
dword reserve_data_1, reserve_data_2;
dword new_buf_offset;
if (y + 30 >= bufh) IncreaseBufSize();
if (y < BUGFIX_32000) {
ESI = strlen;
WriteBufText(x, y, fontType, color, str_offset, buf_data);
}
else {
ydiv = y / BUGFIX_32000 * BUGFIX_32000;
y -= ydiv;
new_buf_offset = ydiv * bufw * 4 + buf_data;
reserve_data_1 = ESDWORD[new_buf_offset];
reserve_data_2 = ESDWORD[new_buf_offset+4];
ESDWORD[new_buf_offset] = bufw;
ESDWORD[new_buf_offset+4] = bufh - y;
ESI = strlen;
WriteBufText(x, y, fontType, color, str_offset, new_buf_offset);
ESDWORD[new_buf_offset] = reserve_data_1;
ESDWORD[new_buf_offset+4] = reserve_data_2;
}
}
void CANVAS::PutPixel(dword x, y, color)
{
dword pos = y*bufw+x*4+8+buf_data;
ESDWORD[pos] = color;
}
void CANVAS::AlignRight(dword x,y,w,h, content_width)
{
dword i, j, l;
dword content_left = w - content_width / 2;
for (j=0; j<h; j++)
{
for (i=j*w+w-x*4, l=j*w+content_width+x*4; (i>=j*w+content_left*4) && (l>=j*w*4); i-=4, l-=4)
{
ESDWORD[buf_data+8+i] >< ESDWORD[buf_data+8+l];
}
}
}
void CANVAS::AlignCenter(dword x,y,w,h, content_width)
{
dword i, j, l;
dword content_left = w - content_width / 2;
for (j=0; j<h; j++)
{
for (i=j*w+content_width+content_left*4, l=j*w+content_width+x*4; (i>=j*w+content_left*4) && (l>=j*w*4); i-=4, l-=4)
{
ESDWORD[buf_data+8+i] >< ESDWORD[buf_data+8+l];
}
}
}
void CANVAS::Show(dword _y_offset, _h)
{
PutPaletteImage(_y_offset * bufw * 4 + buf_data+8, bufw, _h, bufx, bufy, 32, 0);
}
void CANVAS::IncreaseBufSize()
{
static dword bufh_initial;
dword alloc_size;
dword free_ram_size;
char error_str[256];
if (!buf_data) {
alloc_size = bufh * bufw * 4 + 8;
buf_data = malloc(alloc_size);
} else {
if (bufh_initial != bufh) bufh_initial = bufh;
bufh += 4096*1600/bufw; //+50 Mb
alloc_size = bufh * bufw * 4 + 8;
buf_data = realloc(buf_data, alloc_size);
Fill(bufh_initial * bufw * 4 + 8, fill_color);
}
bufh_initial = bufh;
free_ram_size = GetFreeRAM() * 1024;
if (alloc_size > free_ram_size) {
sprintf(#error_str, #draw_buf_not_enaught_ram, alloc_size - free_ram_size/1048576);
notify(#error_str);
}
}
#endif