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https://github.com/KolibriOS/kolibrios.git
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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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We have a long text and need to show it in block.
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Normal line break '\n' must be applied.
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Long lines should be breaked by word.
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TODO: scroll
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*/
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:int DrawTextViewArea(int x,y,w,h, dword buf_start, bg_col, text_col)
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{
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dword write_start;
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dword buf_end;
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#define LINE_H 17
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int label_length_max;
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int write_length;
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bool end_found;
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write_start = buf_start;
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buf_end = strlen(buf_start) + buf_start;
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label_length_max = w / 8; // 8 big font char width
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loop()
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{
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if (bg_col!=-1) DrawBar(x, y, w+1, LINE_H, bg_col);
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end_found = false;
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write_length = strchr(write_start, '\n') - write_start +1; //search normal line break
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if (write_length > label_length_max) || (write_length<=0) //check its position: exceeds maximum line length or not found
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{
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if (buf_end - write_start < label_length_max) //check does current line the last
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{
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write_length = buf_end - write_start;
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end_found = true;
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}
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else
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{
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for (write_length=label_length_max; write_length>0; write_length--) { //search for white space to make the line break
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if (ESBYTE[write_start+write_length] == ' ') {
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end_found = true;
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break;
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}
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}
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}
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if (end_found != true) write_length = label_length_max; //no white space, so we write label_length_max
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}
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ESI = write_length; //set text length attribute for WriteText()
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WriteText(x, y, 0x10, text_col, write_start);
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// if (editpos >= write_start-buf_start) && (editpos <= write_start-buf_start + write_length) {
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// WriteTextB(-write_start+buf_start+editpos * 8 + x - 5 +1, y, 0x90, 0xFF0000, "|");
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// }
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write_start += write_length + 1;
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y += LINE_H;
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if (write_start >= buf_end) break;
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}
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if (bg_col!=-1) DrawBar(x,y,w+1,h-y+LINE_H-4,bg_col);
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return y+LINE_H;
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}
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