// Takes a grid of values, each of which is 0 or 100, and fills in some middle values in the interstices.
void antiAlias(unsigned char mask[COLS][ROWS]) {
short i, j, x, y, dir, nbCount;
const short intensity[5] = {0, 0, 35, 50, 60};
for (i=0; i<COLS; i++) {
for (j=0; j<ROWS; j++) {
if (mask[i][j] < 100) {
nbCount = 0;
for (dir=0; dir<4; dir++) {
x = i + nbDirs[dir][0];
y = j + nbDirs[dir][1];
if (coordinatesAreInWindow(x, y) && mask[x][y] == 100) {
nbCount++;
}
}
mask[i][j] = intensity[nbCount];
}
}
}
}
// Draws the button to the screen, or to a display buffer if one is given.
// Button back color fades from -50% intensity at the edges to the back color in the middle.
// Text is white, but can use color escapes.
// Hovering highlight augments fore and back colors with buttonHoverColor by 20%.
// Pressed darkens the middle color (or turns it the hover color if the button is black).
void drawButton(brogueButton *button, enum buttonDrawStates highlight, cellDisplayBuffer dbuf[COLS][ROWS]) {
short i, textLoc, width, midPercent, symbolNumber, opacity, oldRNG;
color fColor, bColor, fColorBase, bColorBase, bColorEdge, bColorMid;
uchar displayCharacter;
if (!(button->flags & B_DRAW)) {
return;
}
//assureCosmeticRNG;
oldRNG = rogue.RNG;
rogue.RNG = RNG_COSMETIC;
symbolNumber = 0;
width = strLenWithoutEscapes(button->text);
bColorBase = button->buttonColor;
fColorBase = ((button->flags & B_ENABLED) ? white : gray);
if (highlight == BUTTON_HOVER && (button->flags & B_HOVER_ENABLED)) {
//applyColorAugment(&fColorBase, &buttonHoverColor, 20);
//applyColorAugment(&bColorBase, &buttonHoverColor, 20);
applyColorAverage(&fColorBase, &buttonHoverColor, 25);
applyColorAverage(&bColorBase, &buttonHoverColor, 25);
}
bColorEdge = bColorBase;
bColorMid = bColorBase;
applyColorAverage(&bColorEdge, &black, 50);
if (highlight == BUTTON_PRESSED) {
applyColorAverage(&bColorMid, &black, 75);
if (COLOR_DIFF(bColorMid, bColorBase) < 50) {
bColorMid = bColorBase;
applyColorAverage(&bColorMid, &buttonHoverColor, 50);
}
}
bColor = bColorMid;
opacity = button->opacity;
if (highlight == BUTTON_HOVER || highlight == BUTTON_PRESSED) {
opacity = 100 - ((100 - opacity) * opacity / 100); // Apply the opacity twice.
}
for (i = textLoc = 0; i < width && i + button->x < COLS; i++, textLoc++) {
while (button->text[textLoc] == COLOR_ESCAPE) {
textLoc = decodeMessageColor(button->text, textLoc, &fColorBase);
}
fColor = fColorBase;
if (button->flags & B_GRADIENT) {
midPercent = smoothHiliteGradient(i, width - 1);
bColor = bColorEdge;
applyColorAverage(&bColor, &bColorMid, midPercent);
}
if (highlight == BUTTON_PRESSED) {
applyColorAverage(&fColor, &bColor, 30);
}
if (button->opacity < 100) {
applyColorAverage(&fColor, &bColor, 100 - opacity);
}
bakeColor(&fColor);
bakeColor(&bColor);
separateColors(&fColor, &bColor);
displayCharacter = button->text[textLoc];
if (button->text[textLoc] == '*') {
if (button->symbol[symbolNumber]) {
displayCharacter = button->symbol[symbolNumber];
}
symbolNumber++;
}
if (coordinatesAreInWindow(button->x + i, button->y)) {
if (dbuf) {
plotCharToBuffer(displayCharacter, button->x + i, button->y, &fColor, &bColor, dbuf);
dbuf[button->x + i][button->y].opacity = opacity;
} else {
plotCharWithColor(displayCharacter, button->x + i, button->y, &fColor, &bColor);
}
}
}
restoreRNG;
}