ref: 1ce97b39ea2aaae9da67f202bf86cd07db9f755d
dir: /src/ft2_help.c/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include "ft2_header.h"
#include "ft2_gui.h"
#include "ft2_help.h"
#include "ft2_video.h"
#include "ft2_pattern_ed.h"
#include "ft2_bmp.h"
#include "ft2_structs.h"
#include "helpdata/ft2_help_data.h"
typedef struct
{
bool bigFont, noLine;
uint8_t color;
int16_t xPos;
char text[100];
} helpRec;
#define HELP_LINES 15
#define MAX_HELP_LINES 768
#define HELP_SIZE sizeof (helpRec)
#define MAX_SUBJ 10
#define HELP_KOL 135
#define HELP_WIDTH (596 - HELP_KOL)
static uint8_t fHlp_Nr;
static int16_t textLine, fHlp_Line, subjLen[MAX_SUBJ];
static int32_t helpBufferPos;
static helpRec *subjPtrArr[MAX_SUBJ];
static void addText(helpRec *t, int16_t xPos, uint8_t color, char *text)
{
if (*text == '\0')
return;
t->xPos = xPos;
t->color = color;
t->bigFont = false;
t->noLine = false;
strcpy(t->text, text);
*text = '\0'; // empty old string
textLine++;
}
static bool getLine(char *output)
{
if (helpBufferPos >= (int32_t)sizeof (helpData))
{
*output = '\0';
return false;
}
const uint8_t strLen = helpData[helpBufferPos++];
memcpy(output, &helpData[helpBufferPos], strLen);
output[strLen] = '\0';
helpBufferPos += strLen;
return true;
}
static int16_t controlCodeToNum(const char *controlCode)
{
return (((controlCode[0]-'0')%10)*100) + (((controlCode[1]-'0')%10)*10) + ((controlCode[2]-'0')%10);
}
static char *ltrim(char *s)
{
if (*s == '\0')
return (s);
while (*s == ' ') s++;
return s;
}
static char *rtrim(char *s)
{
if (*s == '\0')
return (s);
int32_t i = (int32_t)strlen(s) - 1;
while (i >= 0)
{
if (s[i] != ' ')
{
s[i+1] = '\0';
break;
}
i--;
}
return s;
}
static void readHelp(void) // this is really messy, directly ported from Pascal code...
{
char text[256], text2[256], *s, *sEnd, *s3;
int16_t a, b, i, k;
helpRec *tempText = (helpRec *)malloc(HELP_SIZE * MAX_HELP_LINES);
if (tempText == NULL)
{
okBox(0, "System message", "Not enough memory!");
return;
}
text[0] = '\0';
text2[0] = '\0';
char *s2 = text2;
helpBufferPos = 0;
for (int16_t subj = 0; subj < MAX_SUBJ; subj++)
{
textLine = 0;
int16_t currKol = 0;
uint8_t currColor = PAL_FORGRND;
getLine(text); s = text;
while (strncmp(s, "END", 3) != 0)
{
if (*s == ';')
{
if (!getLine(text))
break;
s = text;
continue;
}
if (*(uint16_t *)s == 0x4C40) // @L - "big font"
{
addText(&tempText[textLine], currKol, currColor, s2);
s += 2;
if (*(uint16_t *)s == 0x5840) // @X - "change X position"
{
currKol = controlCodeToNum(&s[2]);
s += 5;
}
if (*(uint16_t *)s == 0x4340) // @C - "change color
{
currColor = (uint8_t)controlCodeToNum(&s[2]);
currColor = (currColor < 2) ? PAL_FORGRND : PAL_BUTTONS;
s += 5;
}
helpRec *t = &tempText[textLine];
t->xPos = currKol;
t->color = currColor;
t->bigFont = true;
t->noLine = false;
strcpy(t->text, s);
textLine++;
t = &tempText[textLine];
t->noLine = true;
textLine++;
}
else
{
if (*s == '>')
{
addText(&tempText[textLine], currKol, currColor, s2);
s++;
}
if (*(uint16_t *)s == 0x5840) // @X - "set X position (relative to help X start)"
{
currKol = controlCodeToNum(&s[2]);
s += 5;
}
if (*(uint16_t *)s == 0x4340) // @C - "change color"
{
currColor = (uint8_t)controlCodeToNum(&s[2]);
currColor = (currColor < 2) ? PAL_FORGRND : PAL_BUTTONS;
s += 5;
}
s = ltrim(rtrim(s));
if (*s == '\0')
{
addText(&tempText[textLine], currKol, currColor, s2);
strcpy(s2, " ");
addText(&tempText[textLine], currKol, currColor, s2);
}
int16_t sLen = (int16_t)strlen(s);
sEnd = &s[sLen];
while (s < sEnd)
{
if (sLen < 0)
sLen = 0;
i = 0;
while (s[i] != ' ' && i < sLen) i++;
i++;
if (*(uint16_t *)s == 0x5440) // @T - "set absolute X position (in the middle of text)"
{
k = controlCodeToNum(&s[2]);
s += 5; sLen -= 5;
s3 = &s2[strlen(s2)];
while (textWidth(s2) + charWidth(' ') + 1 < k-currKol)
{
s3[0] = ' ';
s3[1] = '\0';
s3++;
}
b = textWidth(s2) + 1;
if (b < (k - currKol))
{
s3 = &s2[strlen(s2)];
for (a = 0; a < k-b-currKol; a++)
s3[a] = 127; // one-pixel spacer glyph
s3[a] = '\0';
}
}
if (textWidth(s2)+textNWidth(s,i)+2 > HELP_WIDTH-currKol)
addText(&tempText[textLine], currKol, currColor, s2);
strncat(s2, s, i);
s += i; sLen -= i;
if ((*s == '\0') || (s >= sEnd))
strcat(s2, " ");
}
}
if (textLine >= MAX_HELP_LINES || !getLine(text))
break;
s = text;
}
subjPtrArr[subj] = (helpRec *)malloc(HELP_SIZE * textLine);
if (subjPtrArr[subj] == NULL)
{
okBox(0, "System message", "Not enough memory!");
break;
}
memcpy(subjPtrArr[subj], tempText, HELP_SIZE * textLine);
subjLen[subj] = textLine;
}
free(tempText);
}
static void bigTextOutHalf(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, bool lowerHalf, const char *textPtr)
{
assert(textPtr != NULL);
uint16_t currX = xPos;
while (true)
{
const char chr = *textPtr++ & 0x7F;
if (chr == '\0')
break;
if (chr != ' ')
{
const uint8_t *srcPtr = &bmp.font2[chr * FONT2_CHAR_W];
if (!lowerHalf)
srcPtr += (FONT2_CHAR_H / 2) * FONT2_WIDTH;
uint32_t *dstPtr = &video.frameBuffer[(yPos * SCREEN_W) + currX];
const uint32_t pixVal = video.palette[paletteIndex];
for (uint32_t y = 0; y < FONT2_CHAR_H/2; y++)
{
for (uint32_t x = 0; x < FONT2_CHAR_W; x++)
{
if (srcPtr[x])
dstPtr[x] = pixVal;
}
srcPtr += FONT2_WIDTH;
dstPtr += SCREEN_W;
}
}
currX += charWidth16(chr);
}
}
static void writeHelp(void)
{
helpRec *pek = subjPtrArr[fHlp_Nr];
if (pek == NULL)
return;
for (int16_t i = 0; i < HELP_LINES; i++)
{
const int16_t k = i + fHlp_Line;
if (k >= subjLen[fHlp_Nr])
break;
clearRect(HELP_KOL, 5 + (i * 11), HELP_WIDTH, 11);
if (pek[k].noLine)
{
if (i == 0)
bigTextOutHalf(HELP_KOL + pek[k-1].xPos, 5 + (i * 11), PAL_FORGRND, false, pek[k-1].text);
}
else
{
if (pek[k].bigFont)
{
if (i == (HELP_LINES - 1))
{
bigTextOutHalf(HELP_KOL + pek[k].xPos, 5 + (i * 11), PAL_FORGRND, true, pek[k].text);
return;
}
else
{
clearRect(HELP_KOL, 5 + ((i + 1) * 11), HELP_WIDTH, 11);
bigTextOut(HELP_KOL + pek[k].xPos, 5 + (i * 11), PAL_FORGRND, pek[k].text);
i++;
}
}
else
{
textOut(HELP_KOL + pek[k].xPos, 5 + (i * 11), pek[k].color, pek[k].text);
}
}
}
}
void helpScrollUp(void)
{
if (fHlp_Line > 0)
{
scrollBarScrollUp(SB_HELP_SCROLL, 1);
writeHelp();
}
}
void helpScrollDown(void)
{
if (fHlp_Line < subjLen[fHlp_Nr]-1)
{
scrollBarScrollDown(SB_HELP_SCROLL, 1);
writeHelp();
}
}
void helpScrollSetPos(uint32_t pos)
{
if (fHlp_Line != (int16_t)pos)
{
fHlp_Line = (int16_t)pos;
writeHelp();
}
}
void showHelpScreen(void)
{
uint16_t tmpID;
if (ui.extended)
exitPatternEditorExtended();
hideTopScreen();
ui.helpScreenShown = true;
drawFramework(0, 0, 128, 173, FRAMEWORK_TYPE1);
drawFramework(128, 0, 504, 173, FRAMEWORK_TYPE1);
drawFramework(130, 2, 479, 169, FRAMEWORK_TYPE2);
showPushButton(PB_HELP_EXIT);
showPushButton(PB_HELP_SCROLL_UP);
showPushButton(PB_HELP_SCROLL_DOWN);
uncheckRadioButtonGroup(RB_GROUP_HELP);
switch (fHlp_Nr)
{
default:
case 0: tmpID = RB_HELP_FEATURES; break;
case 1: tmpID = RB_HELP_EFFECTS; break;
case 2: tmpID = RB_HELP_KEYBOARD; break;
case 3: tmpID = RB_HELP_HOW_TO_USE_FT2; break;
case 4: tmpID = RB_HELP_FAQ; break;
case 5: tmpID = RB_HELP_KNOWN_BUGS; break;
}
radioButtons[tmpID].state = RADIOBUTTON_CHECKED;
showRadioButtonGroup(RB_GROUP_HELP);
showScrollBar(SB_HELP_SCROLL);
textOutShadow(4, 4, PAL_FORGRND, PAL_DSKTOP2, "Subjects:");
textOutShadow(21, 19, PAL_FORGRND, PAL_DSKTOP2, "Features");
textOutShadow(21, 35, PAL_FORGRND, PAL_DSKTOP2, "Effects");
textOutShadow(21, 51, PAL_FORGRND, PAL_DSKTOP2, "Keyboard");
textOutShadow(21, 67, PAL_FORGRND, PAL_DSKTOP2, "How to use FT2");
textOutShadow(21, 83, PAL_FORGRND, PAL_DSKTOP2, "Problems/FAQ");
textOutShadow(21, 99, PAL_FORGRND, PAL_DSKTOP2, "Known bugs");
writeHelp();
}
void hideHelpScreen(void)
{
hidePushButton(PB_HELP_EXIT);
hidePushButton(PB_HELP_SCROLL_UP);
hidePushButton(PB_HELP_SCROLL_DOWN);
hideRadioButtonGroup(RB_GROUP_HELP);
hideScrollBar(SB_HELP_SCROLL);
ui.helpScreenShown = false;
}
void exitHelpScreen(void)
{
hideHelpScreen();
showTopScreen(true);
}
static void setHelpSubject(uint8_t Nr)
{
fHlp_Nr = Nr;
fHlp_Line = 0;
// force update even if new pos value was to be the same as old
scrollBars[SB_HELP_SCROLL].oldPos = UINT32_MAX;
setScrollBarEnd(SB_HELP_SCROLL, subjLen[fHlp_Nr]);
setScrollBarPos(SB_HELP_SCROLL, 0, false);
}
void rbHelpFeatures(void)
{
checkRadioButton(RB_HELP_FEATURES);
setHelpSubject(0);
writeHelp();
}
void rbHelpEffects(void)
{
checkRadioButton(RB_HELP_EFFECTS);
setHelpSubject(1);
writeHelp();
}
void rbHelpKeyboard(void)
{
checkRadioButton(RB_HELP_KEYBOARD);
setHelpSubject(2);
writeHelp();
}
void rbHelpHowToUseFT2(void)
{
checkRadioButton(RB_HELP_HOW_TO_USE_FT2);
setHelpSubject(3);
writeHelp();
}
void rbHelpFAQ(void)
{
checkRadioButton(RB_HELP_FAQ);
setHelpSubject(4);
writeHelp();
}
void rbHelpKnownBugs(void)
{
checkRadioButton(RB_HELP_KNOWN_BUGS);
setHelpSubject(5);
writeHelp();
}
void initFTHelp(void)
{
readHelp();
setHelpSubject(0);
}
void windUpFTHelp(void)
{
for (int16_t i = 0; i < MAX_SUBJ; i++)
{
if (subjPtrArr[i] != NULL)
{
free(subjPtrArr[i]);
subjPtrArr[i] = NULL;
}
}
}