271 lines
7.9 KiB
C
271 lines
7.9 KiB
C
/*
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* style.c
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* md2teach
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*
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* Created by Jeremy Rand on 2021-04-24.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <font.h>
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#include <textedit.h>
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#include "io.h"
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#include "main.h"
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#include "style.h"
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// Defines
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#define NUM_HEADER_SIZES 6
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// This is plain, emphasized, strong or strong+empasized
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#define NUM_TEXT_FORMATS 4
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#define NUM_HEADER_STYLES (NUM_HEADER_SIZES * NUM_TEXT_FORMATS)
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#define NUM_TEXT_STYLES NUM_TEXT_FORMATS
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#define NUM_QUOTE_STYLES NUM_TEXT_FORMATS
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#define NUM_CODE_STYLES 1
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#define TOTAL_STYLES (NUM_HEADER_STYLES + NUM_TEXT_STYLES + NUM_QUOTE_STYLES + NUM_CODE_STYLES)
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#define STARTING_STYLE_ITEMS 32
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// Typedefs
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typedef struct tWindowPos
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{
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int16_t height;
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int16_t width;
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int16_t top;
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int16_t left;
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int32_t version;
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} tWindowPos;
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// I wish I could use the structure definition from textedit.h but TERuler contains optional
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// fields in the definition and Teach isn't expecting them it seems (array of theTabs). So,
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// I need my own struct which omits them.
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typedef struct tRuler
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{
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int16_t leftMargin;
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int16_t leftIndent;
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int16_t rightMargin;
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int16_t just;
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int16_t extraLS;
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int16_t flags;
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int32_t userData;
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int16_t tabType;
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int16_t tabTerminator;
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} tRuler;
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typedef struct tFormatHeader
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{
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int16_t version;
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int32_t rulerSize;
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tRuler ruler;
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int32_t styleListLength;
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TEStyle styleList[TOTAL_STYLES];
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LongWord numberOfStyles;
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} tFormatHeader;
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typedef struct tFormat
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{
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tFormatHeader header;
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StyleItem styleItems[1];
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} tFormat;
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// Globals
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static tWindowPos windowPos = {
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0xad, // height
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0x27c, // width
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0x1a, // top
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0x02, // left
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0x0 // version
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};
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// For the 6 header sizes, we are going with:
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// 1 -> Helvetica 36
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// 2 -> Helvetica 30
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// 3 -> Helvetica 27
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// 4 -> Helvetica 24
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// 5 -> Helvetica 20
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// 6 -> Helvetica 18
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static uint8_t headerFontSizes[NUM_HEADER_SIZES] = {
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36,
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30,
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27,
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24,
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20,
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18
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};
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static tFormat * formatPtr = NULL;
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static uint32_t allocStyleItems = 0;
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static MD_SIZE styleChangedAt = 0;
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// Implementation
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void growStyleItems(void)
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{
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uint32_t newAllocStyleItems = 2 * allocStyleItems;
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formatPtr = realloc(formatPtr, sizeof(formatPtr->header) + newAllocStyleItems * sizeof(StyleItem));
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if (formatPtr == NULL) {
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fprintf(stderr, "%s: Out of memory\n", commandName);
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exit(1);
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}
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allocStyleItems = newAllocStyleItems;
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}
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int addStyle(int styleListNum, uint16_t fontFamily, uint8_t fontSize, uint8_t fontStyle, uint16_t backgroundColour)
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{
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formatPtr->header.styleList[styleListNum].styleFontID.fidRec.famNum = fontFamily;
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formatPtr->header.styleList[styleListNum].styleFontID.fidRec.fontSize = fontSize;
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formatPtr->header.styleList[styleListNum].styleFontID.fidRec.fontStyle = fontStyle;
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formatPtr->header.styleList[styleListNum].foreColor = 0x00;
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formatPtr->header.styleList[styleListNum].backColor = backgroundColour;
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formatPtr->header.styleList[styleListNum].userData = 0x00;
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return styleListNum + 1;
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}
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int styleInit(void)
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{
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int styleListNum;
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int headerSize;
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formatPtr = malloc(sizeof(formatPtr->header) + STARTING_STYLE_ITEMS * sizeof(StyleItem));
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if (formatPtr == NULL) {
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fprintf(stderr, "%s: Out of memory\n", commandName);
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return 1;
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}
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allocStyleItems = STARTING_STYLE_ITEMS;
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formatPtr->header.version = 0x0000;
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formatPtr->header.rulerSize = sizeof(formatPtr->header.ruler);
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formatPtr->header.ruler.leftMargin = 0x00;
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formatPtr->header.ruler.leftIndent = 0x00;
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formatPtr->header.ruler.rightMargin = 0x0221;
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formatPtr->header.ruler.just = leftJust;
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formatPtr->header.ruler.extraLS = 0x00;
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formatPtr->header.ruler.flags = 0x00;
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formatPtr->header.ruler.userData = 0x00;
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formatPtr->header.ruler.tabType = stdTabs;
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formatPtr->header.ruler.tabTerminator = 0x40;
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formatPtr->header.styleListLength = sizeof(formatPtr->header.styleList);
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styleListNum = 0;
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// Add header styles
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for (headerSize = 0; headerSize < NUM_HEADER_SIZES; headerSize++) {
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styleListNum = addStyle(styleListNum, helvetica, headerFontSizes[headerSize], plainMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, headerFontSizes[headerSize], boldMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, headerFontSizes[headerSize], italicMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, headerFontSizes[headerSize], boldMask | italicMask, 0xffff);
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}
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// Add test styles - Also default the first text format to plain.
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formatPtr->header.numberOfStyles = 1;
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formatPtr->styleItems[0].dataOffset = 0;
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formatPtr->styleItems[0].dataOffset = styleListNum * sizeof(formatPtr->header.styleList[0]);
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styleListNum = addStyle(styleListNum, helvetica, 12, plainMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, 12, boldMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, 12, italicMask, 0xffff);
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styleListNum = addStyle(styleListNum, helvetica, 12, boldMask | italicMask, 0xffff);
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// Add quote styles
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styleListNum = addStyle(styleListNum, helvetica, 12, plainMask, 0xeeee);
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styleListNum = addStyle(styleListNum, helvetica, 12, boldMask, 0xeeee);
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styleListNum = addStyle(styleListNum, helvetica, 12, italicMask, 0xeeee);
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styleListNum = addStyle(styleListNum, helvetica, 12, boldMask | italicMask, 0xeeee);
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// Add code style
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styleListNum = addStyle(styleListNum, courier, 12, plainMask, 0xffff);
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if (styleListNum != TOTAL_STYLES)
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{
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fprintf(stderr, "%s: Expected %d styles but created %d styles.\n", commandName);
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return 1;
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}
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return 0;
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}
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void setStyle(tStyleType styleType, uint16_t textMask, uint16_t headerSize)
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{
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int32_t styleOffset;
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MD_SIZE currentPos;
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int lastStyleIndex = formatPtr->header.numberOfStyles - 1;
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switch (styleType) {
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case STYLE_TYPE_HEADER:
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styleOffset = ((headerSize - 1) * NUM_TEXT_FORMATS) + textMask;
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break;
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case STYLE_TYPE_TEXT:
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styleOffset = NUM_HEADER_STYLES + textMask;
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break;
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case STYLE_TYPE_QUOTE:
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styleOffset = NUM_HEADER_STYLES + NUM_TEXT_STYLES + textMask;
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break;
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case STYLE_TYPE_CODE:
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styleOffset = NUM_HEADER_STYLES + NUM_TEXT_STYLES + NUM_QUOTE_STYLES;
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break;
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default:
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fprintf(stderr, "%s: Unexpected style type (%u)\n", commandName, (uint16_t)styleType);
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}
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styleOffset *= sizeof(formatPtr->header.styleList[0]);
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// If the offset requested is the same as the one we already have, then just return.
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// Nothing has changed.
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if (formatPtr->styleItems[lastStyleIndex].dataOffset == styleOffset)
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return;
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// Check to see if the previous style actually emitted any characters and if not,
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// then just overwrite it with this new style.
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currentPos = outputPos();
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if (styleChangedAt == currentPos) {
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formatPtr->styleItems[lastStyleIndex].dataOffset = styleOffset;
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return;
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}
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formatPtr->styleItems[lastStyleIndex].dataLength = currentPos - styleChangedAt;
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styleChangedAt = currentPos;
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if (formatPtr->header.numberOfStyles == allocStyleItems)
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growStyleItems();
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lastStyleIndex++;
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formatPtr->header.numberOfStyles++;
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formatPtr->styleItems[lastStyleIndex].dataOffset = styleOffset;
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}
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void closeStyle(void)
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{
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MD_SIZE currentPos = outputPos();
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int lastStyleIndex = formatPtr->header.numberOfStyles - 1;
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// If the final style was not used, then remove it. Otherwise, update the length of the
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// final style.
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if (styleChangedAt == currentPos) {
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formatPtr->header.numberOfStyles--;
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} else {
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formatPtr->styleItems[lastStyleIndex]. dataLength = currentPos - styleChangedAt;
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}
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}
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