ref: f75ed687deda27988f9a566c35efdc074ecf84ed
dir: /src/ft2_textboxes.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 <stdbool.h>
#include "ft2_header.h"
#include "ft2_gui.h"
#include "ft2_video.h"
#include "ft2_config.h"
#include "ft2_diskop.h"
#include "ft2_keyboard.h"
#include "ft2_mouse.h"
#include "ft2_bmp.h"
#include "ft2_structs.h"
textBox_t textBoxes[NUM_TEXTBOXES] =
{
// ------ RESERVED TEXTBOXES ------
{ 0 },
/*
** -- STRUCT INFO: --
** x = x position
** y = y position
** w = width
** h = height
** tx = left padding for text
** ty = top padding for text
** maxc = max characters in box string
** rmb = can only be triggered with right mouse button (f.ex. tracker instrument texts)
** cmc = change mouse cursor when hovering over it
*/
// ------ INSTRUMENT/SAMPLE/SONG NAME TEXTBOXES ------
// x, y, w, h, tx,ty, maxc, rmb, cmc
{ 446, 5, 140, 10, 1, 0, 22, true, false },
{ 446, 16, 140, 10, 1, 0, 22, true, false },
{ 446, 27, 140, 10, 1, 0, 22, true, false },
{ 446, 38, 140, 10, 1, 0, 22, true, false },
{ 446, 49, 140, 10, 1, 0, 22, true, false },
{ 446, 60, 140, 10, 1, 0, 22, true, false },
{ 446, 71, 140, 10, 1, 0, 22, true, false },
{ 446, 82, 140, 10, 1, 0, 22, true, false },
{ 446, 99, 116, 10, 1, 0, 22, true, false },
{ 446, 110, 116, 10, 1, 0, 22, true, false },
{ 446, 121, 116, 10, 1, 0, 22, true, false },
{ 446, 132, 116, 10, 1, 0, 22, true, false },
{ 446, 143, 116, 10, 1, 0, 22, true, false },
{ 424, 158, 160, 12, 2, 1, 20, false, true },
// ------ DISK OP. TEXTBOXES ------
// x, y, w, h, tx,ty, maxc, rmb, cmc
{ 31, 158, 134, 12, 2, 1, PATH_MAX, false, true },
// ------ CONFIG TEXTBOXES ------
// x, y, w, h, tx,ty, maxc, rmb, cmc
{ 486, 16, 143, 12, 2, 1, 80, false, true },
{ 486, 31, 143, 12, 2, 1, 80, false, true },
{ 486, 46, 143, 12, 2, 1, 80, false, true },
{ 486, 61, 143, 12, 2, 1, 80, false, true },
{ 486, 76, 143, 12, 2, 1, 80, false, true }
};
static int16_t markX1, markX2;
static uint16_t oldCursorPos;
static int32_t oldMouseX;
static void moveTextCursorLeft(int16_t i, bool updateTextBox);
static void moveTextCursorRight(int16_t i, bool updateTextBox);
static void setSongModifiedFlagIfNeeded(void) // called during keystrokes in text boxes
{
if (mouse.lastEditBox == TB_SONG_NAME ||
(mouse.lastEditBox >= TB_INST1 && mouse.lastEditBox <= TB_INST8) ||
(mouse.lastEditBox >= TB_SAMP1 && mouse.lastEditBox <= TB_SAMP5))
{
setSongModifiedFlag();
}
}
bool textIsMarked(void)
{
if (markX1 == markX2)
return false;
return true;
}
static void removeTextMarking(void)
{
markX1 = 0;
markX2 = 0;
}
static int16_t getTextMarkStart(void)
{
if (markX2 < markX1)
return markX2;
return markX1;
}
static int16_t getTextMarkEnd(void)
{
if (markX1 > markX2)
return markX1;
return markX2;
}
static int16_t getTextLength(textBox_t *t, uint16_t offset)
{
uint16_t i;
if (t->textPtr == NULL || offset >= t->maxChars)
return 0;
// count number of characters in text
for (i = offset; i < t->maxChars; i++)
{
if (t->textPtr[i] == '\0')
break;
}
i -= offset; // i now contains string length
assert(i <= t->maxChars);
return i;
}
static void deleteMarkedText(textBox_t *t)
{
if (!textIsMarked())
return;
const int16_t start = getTextMarkStart();
const int16_t end = getTextMarkEnd();
assert(start < t->maxChars && end <= t->maxChars);
// calculate pixel width of string to delete
int32_t deleteTextWidth = 0;
for (int32_t i = start; i < end; i++)
deleteTextWidth += charWidth(t->textPtr[i]);
// copy markEnd part to markStart, and add null termination
const int32_t length = (int32_t)strlen(&t->textPtr[end]);
if (length > 0)
memcpy(&t->textPtr[start], &t->textPtr[end], length);
t->textPtr[start+length] = '\0';
// scroll buffer offset to the left if we are scrolled
if (t->bufOffset >= deleteTextWidth)
t->bufOffset -= deleteTextWidth;
else
t->bufOffset = 0;
// set text cursor to markStart
t->cursorPos = start;
setSongModifiedFlagIfNeeded();
}
static void setCursorToMarkStart(textBox_t *t)
{
if (!textIsMarked())
return;
const int16_t start = getTextMarkStart();
assert(start < t->maxChars);
t->cursorPos = start;
int32_t startXPos = 0;
for (int32_t i = 0; i < start; i++)
{
const char ch = t->textPtr[i];
if (ch == '\0')
break;
startXPos += charWidth(ch);
}
// change buffer offset, if needed
if (startXPos < t->bufOffset)
t->bufOffset = startXPos;
}
static void setCursorToMarkEnd(textBox_t *t)
{
if (!textIsMarked())
return;
const int16_t end = getTextMarkEnd();
assert(end <= t->maxChars);
t->cursorPos = end;
int32_t endXPos = 0;
for (int32_t i = 0; i < end; i++)
{
const char ch = t->textPtr[i];
if (ch == '\0')
break;
endXPos += charWidth(ch);
}
// change buffer offset, if needed
if (endXPos > t->bufOffset+t->renderW)
t->bufOffset = endXPos - t->renderW;
}
static void copyMarkedText(textBox_t *t)
{
if (!textIsMarked())
return;
const int32_t start = getTextMarkStart();
const int32_t end = getTextMarkEnd();
assert(start < t->maxChars && end <= t->maxChars);
const int32_t length = end - start;
if (length < 1)
return;
/* Change mark-end character to NUL so that we
** we only copy the marked section of the string.
** There's always room for a NUL at the end of
** the text box string, so this is safe.
**/
const char oldChar = t->textPtr[end];
t->textPtr[end] = '\0';
char *utf8Text = cp437ToUtf8(&t->textPtr[start]);
if (utf8Text != NULL)
{
SDL_SetClipboardText(utf8Text);
free(utf8Text);
}
t->textPtr[end] = oldChar; // set back original character
}
static void cutMarkedText(textBox_t *t)
{
if (!textIsMarked())
return;
copyMarkedText(t);
deleteMarkedText(t);
removeTextMarking();
drawTextBox(mouse.lastEditBox);
}
static void pasteText(textBox_t *t)
{
char *endPart;
if (!SDL_HasClipboardText())
return;
// if we've marked text, delete it and remove text marking
if (textIsMarked())
{
deleteMarkedText(t);
removeTextMarking();
}
if (t->cursorPos >= t->maxChars)
return;
const int32_t textLength = getTextLength(t, 0);
const int32_t roomLeft = t->maxChars - textLength;
if (roomLeft <= 0)
return; // no more room!
char *copiedTextUtf8 = SDL_GetClipboardText();
char *copiedText = utf8ToCp437(copiedTextUtf8, true);
if (copiedText == NULL)
return;
int32_t copiedTextLength = (int32_t)strlen(copiedText);
if (copiedTextLength > roomLeft)
copiedTextLength = roomLeft;
const uint16_t endOffset = t->cursorPos;
endPart = NULL; // prevent false compiler warning
const int32_t endPartLength = getTextLength(t, endOffset);
if (endPartLength > 0)
{
endPart = (char *)malloc(endPartLength+1);
if (endPart == NULL)
{
free(copiedText);
okBox(0, "System message", "Not enough memory!");
return;
}
}
// make a copy of end data
if (endPartLength > 0)
{
memcpy(endPart, &t->textPtr[endOffset], endPartLength);
endPart[endPartLength] = '\0';
}
// paste copied data
memcpy(&t->textPtr[endOffset], copiedText, copiedTextLength);
t->textPtr[endOffset+copiedTextLength] = '\0';
free(copiedText);
// append end data
if (endPartLength > 0)
{
strcat(&t->textPtr[endOffset+copiedTextLength], endPart);
free(endPart);
}
for (int32_t i = 0; i < copiedTextLength; i++)
moveTextCursorRight(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
drawTextBox(mouse.lastEditBox);
setSongModifiedFlagIfNeeded();
}
void exitTextEditing(void)
{
if (!editor.editTextFlag)
return;
if (mouse.lastEditBox >= 0 && mouse.lastEditBox < NUM_TEXTBOXES)
{
textBoxes[mouse.lastEditBox].bufOffset = 0;
removeTextMarking();
drawTextBox(mouse.lastEditBox);
}
if (mouse.lastEditBox == TB_DISKOP_FILENAME && getDiskOpItem() == DISKOP_ITEM_MODULE)
{
updateCurrSongFilename(); // for window title
updateWindowTitle(true);
}
keyb.ignoreCurrKeyUp = true; // prevent a note being played (on enter key)
editor.editTextFlag = false;
hideSprite(SPRITE_TEXT_CURSOR);
SDL_StopTextInput();
}
static int16_t cursorPosToX(textBox_t *t)
{
assert(t->textPtr != NULL);
int32_t x = -1; // cursor starts one pixel before character
for (int16_t i = 0; i < t->cursorPos; i++)
x += charWidth(t->textPtr[i]);
x -= t->bufOffset; // subtract by buffer offset to get real X position
return (int16_t)x;
}
int16_t getTextCursorX(textBox_t *t)
{
return t->x + t->tx + cursorPosToX(t);
}
int16_t getTextCursorY(textBox_t *t)
{
return t->y + t->ty;
}
static void scrollTextBufferLeft(textBox_t *t)
{
// scroll buffer and clamp
t->bufOffset -= TEXT_SCROLL_VALUE;
if (t->bufOffset < 0)
t->bufOffset = 0;
}
static void scrollTextBufferRight(textBox_t *t, uint16_t numCharsInText)
{
assert(numCharsInText <= t->maxChars);
// get end of text position
int32_t textEnd = 0;
for (uint16_t j = 0; j < numCharsInText; j++)
textEnd += charWidth(t->textPtr[j]);
// subtract by text box width and clamp to 0
textEnd -= t->renderW;
if (textEnd < 0)
textEnd = 0;
// scroll buffer and clamp
t->bufOffset += TEXT_SCROLL_VALUE;
if (t->bufOffset > textEnd)
t->bufOffset = textEnd;
}
static void moveTextCursorToMouseX(uint16_t textBoxID)
{
int16_t i;
textBox_t *t = &textBoxes[textBoxID];
if ((mouse.x == t->x && t->bufOffset == 0) || t->textPtr == NULL || t->textPtr[0] == '\0')
{
t->cursorPos = 0;
return;
}
int16_t numChars = getTextLength(t, 0);
// find out what character we are clicking at, and set cursor to that character
const int32_t mx = t->bufOffset + mouse.x;
int32_t tx = (t->x + t->tx) - 1;
int32_t cw = -1;
for (i = 0; i < numChars; i++)
{
cw = charWidth(t->textPtr[i]);
const int32_t tx2 = tx + cw;
if (mx >= tx && mx < tx2)
{
t->cursorPos = i;
break;
}
tx += cw;
}
// set to last character if we clicked outside the end of the text
if (i == numChars && mx >= tx)
t->cursorPos = numChars;
if (cw != -1)
{
const int16_t cursorPos = cursorPosToX(t);
// scroll buffer to the right if needed
if (cursorPos+cw > t->renderW)
scrollTextBufferRight(t, numChars);
// scroll buffer to the left if needed
else if (cursorPos < 0-1)
scrollTextBufferLeft(t);
}
editor.textCursorBlinkCounter = 0;
}
static void textOutBuf(uint8_t *dstBuffer, uint32_t dstWidth, uint8_t paletteIndex, char *text, uint32_t maxTextLen)
{
assert(text != NULL);
if (*text == '\0')
return; // empty string
uint16_t currX = 0;
for (uint32_t i = 0; i < maxTextLen; i++)
{
const char chr = *text++ & 0x7F;
if (chr == '\0')
break;
if (chr != ' ')
{
const uint8_t *srcPtr = &bmp.font1[chr * FONT1_CHAR_W];
uint8_t *dstPtr = &dstBuffer[currX];
for (uint32_t y = 0; y < FONT1_CHAR_H; y++)
{
for (uint32_t x = 0; x < FONT1_CHAR_W; x++)
{
if (srcPtr[x])
dstPtr[x] = paletteIndex;
}
srcPtr += FONT1_WIDTH;
dstPtr += dstWidth;
}
}
currX += charWidth(chr);
}
}
// a lot of filling here, but textboxes are small so no problem...
void drawTextBox(uint16_t textBoxID)
{
int8_t cw;
uint8_t pal;
assert(textBoxID < NUM_TEXTBOXES);
textBox_t *t = &textBoxes[textBoxID];
if (!t->visible)
return;
// test if buffer offset is not overflowing
#ifdef _DEBUG
if (t->renderBufW > t->renderW)
assert(t->bufOffset <= t->renderBufW-t->renderW);
#endif
// fill text rendering buffer with transparency key
memset(t->renderBuf, PAL_TRANSPR, t->renderBufW * t->renderBufH);
if (t->textPtr == NULL)
return;
// draw text mark background
if (textIsMarked())
{
hideSprite(SPRITE_TEXT_CURSOR);
int32_t start = getTextMarkStart();
int32_t end = getTextMarkEnd();
assert(start < t->maxChars && end <= t->maxChars);
// find pixel start/length from markX1 and markX2
int32_t x1 = 0;
int32_t x2 = 0;
for (int32_t i = 0; i < end; i++)
{
const char ch = t->textPtr[i];
if (ch == '\0')
break;
cw = charWidth(ch);
if (i < start)
x1 += cw;
x2 += cw;
}
// render text mark background
if (x1 != x2)
{
start = x1;
const int32_t length = x2 - x1;
assert(start+length <= t->renderBufW);
uint8_t *ptr32 = &t->renderBuf[start];
for (uint16_t y = 0; y < t->renderBufH; y++, ptr32 += t->renderBufW)
memset(ptr32, PAL_TEXTMRK, length);
}
}
// render text to text render buffer
textOutBuf(t->renderBuf, t->renderBufW, PAL_FORGRND, t->textPtr, t->maxChars);
// fill screen rect background color (not always needed, but I'm lazy)
pal = video.frameBuffer[(t->y * SCREEN_W) + t->x] >> 24; // get background palette (stored in alpha channel)
fillRect(t->x + t->tx, t->y + t->ty, t->renderW, 10, pal); // 10 = tallest possible glyph/char height
// render visible part of text render buffer to screen
blitClipX(t->x + t->tx, t->y + t->ty, &t->renderBuf[t->bufOffset], t->renderBufW, t->renderBufH, t->renderW);
}
void showTextBox(uint16_t textBoxID)
{
assert(textBoxID < NUM_TEXTBOXES);
textBoxes[textBoxID].visible = true;
}
void hideTextBox(uint16_t textBoxID)
{
assert(textBoxID < NUM_TEXTBOXES);
hideSprite(SPRITE_TEXT_CURSOR);
textBoxes[textBoxID].visible = false;
}
static void setMarkX2ToMouseX(textBox_t *t)
{
int16_t i;
if (t->textPtr == NULL || t->textPtr[0] == '\0')
{
removeTextMarking();
return;
}
if (markX2 < markX1 && mouse.x < t->x+t->tx)
{
markX2 = 0;
return;
}
const int16_t numChars = getTextLength(t, 0);
// find out what character we are clicking at, and set markX2 to that character
const int32_t mx = t->bufOffset + mouse.x;
int32_t tx = (t->x + t->tx) - 1;
for (i = 0; i < numChars; i++)
{
const int32_t cw = charWidth(t->textPtr[i]);
const int32_t tx2 = tx + cw;
if (mx >= tx && mx < tx2)
{
markX2 = i;
break;
}
tx += cw;
}
// set to last character if we clicked outside the end of the text
if (i == numChars && mx >= tx)
markX2 = numChars;
if (mouse.x >= t->x+t->w-3)
{
scrollTextBufferRight(t, numChars);
if (++markX2 > numChars)
markX2 = numChars;
}
else if (mouse.x <= t->x+t->tx+3)
{
if (t->bufOffset > 0)
{
scrollTextBufferLeft(t);
if (--markX2 < 0)
markX2 = 0;
}
}
t->cursorPos = markX2;
assert(t->cursorPos >= 0 && t->cursorPos <= getTextLength(t, 0));
editor.textCursorBlinkCounter = 0;
}
void handleTextBoxWhileMouseDown(void)
{
assert(mouse.lastUsedObjectID >= 0 && mouse.lastUsedObjectID < NUM_TEXTBOXES);
textBox_t *t = &textBoxes[mouse.lastUsedObjectID];
if (!t->visible)
return;
if (mouse.x != oldMouseX)
{
oldMouseX = mouse.x;
markX1 = oldCursorPos;
setMarkX2ToMouseX(t);
drawTextBox(mouse.lastUsedObjectID);
}
}
bool testTextBoxMouseDown(void)
{
uint16_t start, end;
oldMouseX = mouse.x;
oldCursorPos = 0;
if (ui.sysReqShown)
{
// if a system request is open, only test the first textbox (reserved)
start = 0;
end = 1;
}
else
{
start = 1;
end = NUM_TEXTBOXES;
}
const int32_t mx = mouse.x;
const int32_t my = mouse.y;
textBox_t *t = &textBoxes[start];
for (uint16_t i = start; i < end; i++, t++)
{
if (!t->visible || t->textPtr == NULL)
continue;
if (my >= t->y && my < t->y+t->h &&
mx >= t->x && mx < t->x+t->w)
{
if (!mouse.rightButtonPressed && t->rightMouseButton)
break;
// if we were editing another text box and clicked on another one, properly end it
if (editor.editTextFlag && i != mouse.lastEditBox)
exitTextEditing();
mouse.lastEditBox = i;
moveTextCursorToMouseX(mouse.lastEditBox);
oldCursorPos = t->cursorPos;
removeTextMarking();
drawTextBox(mouse.lastEditBox);
editor.textCursorBlinkCounter = 0;
mouse.lastUsedObjectType = OBJECT_TEXTBOX;
mouse.lastUsedObjectID = i;
editor.editTextFlag = true;
SDL_StartTextInput();
return true;
}
}
// if we were editing text and we clicked outside of a text box, exit text editing
if (editor.editTextFlag)
exitTextEditing();
return false;
}
void updateTextBoxPointers(void)
{
int32_t i;
instr_t *curIns = instr[editor.curInstr];
// instrument names
for (i = 0; i < 8; i++)
textBoxes[TB_INST1+i].textPtr = song.instrName[1+editor.instrBankOffset+i];
// sample names
if (editor.curInstr == 0 || curIns == NULL)
{
for (i = 0; i < 5; i++)
textBoxes[TB_SAMP1+i].textPtr = NULL;
}
else
{
for (i = 0; i < 5; i++)
textBoxes[TB_SAMP1+i].textPtr = curIns->smp[editor.sampleBankOffset+i].name;
}
// song name
textBoxes[TB_SONG_NAME].textPtr = song.name;
}
void setupInitialTextBoxPointers(void)
{
textBoxes[TB_CONF_DEF_MODS_DIR].textPtr = config.modulesPath;
textBoxes[TB_CONF_DEF_INSTRS_DIR].textPtr = config.instrPath;
textBoxes[TB_CONF_DEF_SAMPS_DIR].textPtr = config.samplesPath;
textBoxes[TB_CONF_DEF_PATTS_DIR].textPtr = config.patternsPath;
textBoxes[TB_CONF_DEF_TRACKS_DIR].textPtr = config.tracksPath;
}
void setTextCursorToEnd(textBox_t *t)
{
uint16_t numChars;
// count number of chars and get full text width
uint32_t textWidth = 0;
for (numChars = 0; numChars < t->maxChars; numChars++)
{
const char ch = t->textPtr[numChars];
if (ch == '\0')
break;
textWidth += charWidth(ch);
}
// if cursor is not at the end, handle text marking
if (t->cursorPos < numChars)
{
if (keyb.leftShiftPressed)
{
if (!textIsMarked())
markX1 = t->cursorPos;
markX2 = numChars;
}
else
{
removeTextMarking();
}
}
t->cursorPos = numChars;
t->bufOffset = 0;
if (textWidth > t->renderW)
t->bufOffset = textWidth - t->renderW;
drawTextBox(mouse.lastEditBox);
editor.textCursorBlinkCounter = 0;
}
void handleTextEditControl(SDL_Keycode keycode)
{
int16_t i;
uint16_t numChars;
int32_t textLength;
uint32_t textWidth;
assert(mouse.lastEditBox >= 0 && mouse.lastEditBox < NUM_TEXTBOXES);
textBox_t *t = &textBoxes[mouse.lastEditBox];
assert(t->textPtr != NULL);
switch (keycode)
{
case SDLK_ESCAPE:
{
removeTextMarking();
exitTextEditing();
}
break;
case SDLK_a:
{
// CTRL+A - mark all text
if (keyb.leftCtrlPressed)
{
// count number of chars and get full text width
textWidth = 0;
for (numChars = 0; numChars < t->maxChars; numChars++)
{
if (t->textPtr[numChars] == '\0')
break;
textWidth += charWidth(t->textPtr[numChars]);
}
markX1 = 0;
markX2 = numChars;
t->cursorPos = markX2;
t->bufOffset = 0;
if (textWidth > t->renderW)
t->bufOffset = textWidth - t->renderW;
drawTextBox(mouse.lastEditBox);
}
}
break;
case SDLK_x:
{
// CTRL+X - cut marked text
if (keyb.leftCtrlPressed)
cutMarkedText(t);
}
break;
case SDLK_c:
{
// CTRL+C - copy marked text
if (keyb.leftCtrlPressed)
copyMarkedText(t);
}
break;
case SDLK_v:
{
// CTRL+V - paste text
if (keyb.leftCtrlPressed)
pasteText(t);
}
break;
case SDLK_KP_ENTER:
case SDLK_RETURN:
{
// ALT+ENTER = toggle fullscreen, even while text editing
if (keyb.leftAltPressed)
toggleFullScreen();
else
exitTextEditing();
}
break;
case SDLK_LEFT:
{
if (keyb.leftShiftPressed)
{
if (!textIsMarked())
{
// no marking, mark character to left from cursor
if (t->cursorPos > 0)
{
markX1 = t->cursorPos;
moveTextCursorLeft(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
markX2 = t->cursorPos;
drawTextBox(mouse.lastEditBox);
}
}
else
{
// marking, extend/shrink marking
if (markX2 > 0)
{
t->cursorPos = markX2;
markX2--;
moveTextCursorLeft(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
drawTextBox(mouse.lastEditBox);
}
}
}
else
{
if (textIsMarked())
{
setCursorToMarkStart(t);
removeTextMarking();
}
else
{
removeTextMarking();
moveTextCursorLeft(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
}
drawTextBox(mouse.lastEditBox);
}
}
break;
case SDLK_RIGHT:
{
if (keyb.leftShiftPressed)
{
textLength = getTextLength(t, 0);
if (!textIsMarked())
{
if (t->cursorPos < textLength)
{
markX1 = t->cursorPos;
moveTextCursorRight(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
markX2 = t->cursorPos;
drawTextBox(mouse.lastEditBox);
}
}
else
{
// marking, extend/shrink marking
if (markX2 < textLength)
{
t->cursorPos = markX2;
markX2++;
moveTextCursorRight(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
drawTextBox(mouse.lastEditBox);
}
}
}
else
{
if (textIsMarked())
{
setCursorToMarkEnd(t);
removeTextMarking();
}
else
{
removeTextMarking();
moveTextCursorRight(mouse.lastEditBox, TEXTBOX_NO_UPDATE);
}
drawTextBox(mouse.lastEditBox);
}
}
break;
case SDLK_BACKSPACE:
{
if (textIsMarked())
{
deleteMarkedText(t);
removeTextMarking();
drawTextBox(mouse.lastEditBox);
break;
}
removeTextMarking();
if (t->cursorPos > 0 && t->textPtr[0] != '\0')
{
// scroll buffer offset if we are scrolled
if (t->bufOffset > 0)
{
t->bufOffset -= charWidth(t->textPtr[t->cursorPos-1]);
if (t->bufOffset < 0)
t->bufOffset = 0;
}
moveTextCursorLeft(mouse.lastEditBox, TEXTBOX_UPDATE);
i = t->cursorPos;
while (i < t->maxChars)
{
t->textPtr[i] = t->textPtr[i+1];
if (t->textPtr[i] == '\0')
break;
i++;
}
drawTextBox(mouse.lastEditBox);
setSongModifiedFlagIfNeeded();
}
}
break;
case SDLK_DELETE:
{
if (textIsMarked())
{
deleteMarkedText(t);
removeTextMarking();
drawTextBox(mouse.lastEditBox);
break;
}
if (t->textPtr[t->cursorPos] != '\0' && t->textPtr[0] != '\0' && t->cursorPos < t->maxChars)
{
// scroll buffer offset if we are scrolled
if (t->bufOffset > 0)
{
t->bufOffset -= charWidth(t->textPtr[t->cursorPos]);
if (t->bufOffset < 0)
t->bufOffset = 0;
}
i = t->cursorPos;
while (i < t->maxChars)
{
if (t->textPtr[i] == '\0')
break;
t->textPtr[i] = t->textPtr[i+1];
i++;
}
drawTextBox(mouse.lastEditBox);
setSongModifiedFlagIfNeeded();
}
}
break;
case SDLK_HOME:
{
if (keyb.leftShiftPressed)
{
if (!textIsMarked())
markX1 = t->cursorPos;
markX2 = 0;
t->bufOffset = 0;
t->cursorPos = 0;
}
else
{
removeTextMarking();
if (t->cursorPos > 0)
{
t->cursorPos = 0;
t->bufOffset = 0;
editor.textCursorBlinkCounter = 0;
}
}
drawTextBox(mouse.lastEditBox);
}
break;
case SDLK_END:
{
setTextCursorToEnd(t);
}
break;
default: break;
}
}
void handleTextEditInputChar(char textChar)
{
assert(mouse.lastEditBox >= 0 && mouse.lastEditBox < NUM_TEXTBOXES);
textBox_t *t = &textBoxes[mouse.lastEditBox];
if (t->textPtr == NULL)
return;
const int8_t ch = (const int8_t)textChar;
if (ch < 32 && ch != -124 && ch != -108 && ch != -122 && ch != -114 && ch != -103 && ch != -113)
return; // allow certain codepage 437 nordic characters
if (textIsMarked())
{
deleteMarkedText(t);
removeTextMarking();
}
if (t->cursorPos >= 0 && t->cursorPos < t->maxChars)
{
int32_t i = getTextLength(t, 0);
if (i < t->maxChars) // do we have room for a new character?
{
t->textPtr[i+1] = '\0';
// if string not empty, shift string to the right to make space for char insertion
if (i > 0)
{
for (; i > t->cursorPos; i--)
t->textPtr[i] = t->textPtr[i-1];
}
t->textPtr[t->cursorPos] = textChar;
moveTextCursorRight(mouse.lastEditBox, TEXTBOX_UPDATE); // also updates textbox
setSongModifiedFlagIfNeeded();
}
}
}
static void moveTextCursorLeft(int16_t i, bool updateTextBox)
{
textBox_t *t = &textBoxes[i];
if (t->cursorPos == 0)
return;
t->cursorPos--;
// scroll buffer if needed
if (cursorPosToX(t) < 0-1)
scrollTextBufferLeft(t);
if (updateTextBox)
drawTextBox(i);
editor.textCursorBlinkCounter = 0; // reset text cursor blink timer
}
static void moveTextCursorRight(int16_t i, bool updateTextBox)
{
textBox_t *t = &textBoxes[i];
const uint16_t numChars = getTextLength(t, 0);
if (t->cursorPos >= numChars)
return;
t->cursorPos++;
// scroll buffer if needed
if (cursorPosToX(t) >= t->renderW)
scrollTextBufferRight(t, numChars);
if (updateTextBox)
drawTextBox(i);
editor.textCursorBlinkCounter = 0; // reset text cursor blink timer
}
void freeTextBoxes(void)
{
// free text box buffers (skip first entry, it's reserved for inputBox())
textBox_t *t = &textBoxes[1];
for (int32_t i = 1; i < NUM_TEXTBOXES; i++, t++)
{
if (t->renderBuf != NULL)
{
free(t->renderBuf);
t->renderBuf = NULL;
}
}
}