dylan/fantasy-console
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Implement scrolling in code tab

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dylan 2023-05-05 20:08:54 -07:00
parent 5e4b76ebb3
commit 99eb6b82f2
1 changed files with 26 additions and 0 deletions
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26
codetab.ts
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@ -91,6 +91,23 @@ const state = {
this.insertText("");
}
},
scrollToCursor() {
const {focusY, focusX, scrollY, scrollX} = this;
const fh = fontHeight + 1;
const fw = fontWidth;
if (focusY*fh < scrollY) {
this.scrollY = focusY*fh;
}
if (focusY*fh > scrollY+112-fh) {
this.scrollY = focusY*fh-112+fh;
}
if (focusX*fw < scrollX) {
this.scrollX = focusX*fw;
}
if (focusX*fw > scrollX+128-fw) {
this.scrollX = focusX*fw-128+fw;
}
},
get code() {
const {sheet_type, value} = getSheet(0);
if (sheet_type !== "code") {
@ -156,6 +173,7 @@ const update = () => {
const keyboardString = getKeyboardString();
if (keyboardString) {
state.insertText(keyboardString);
state.scrollToCursor();
}
// TODO: Handle ctrl-C, ctrl-V, ctrl-X, ctrl-Z
// TODO: Make ctrl-/ do commenting out (take inspiration from tab)
@ -163,6 +181,7 @@ const update = () => {
if (keyPressed(K.ENTER)) {
// TODO: Make this play nicely with indentation
state.insertText("\n");
state.scrollToCursor();
}
if (keyPressed(K.TAB)) {
if (!shiftKeyDown()) {
@ -174,12 +193,15 @@ const update = () => {
} else {
state.outdent(/^(\t| )/);
}
state.scrollToCursor();
}
if (keyPressed(K.BACKSPACE)) {
state.backspace();
state.scrollToCursor();
}
if (keyPressed(K.DELETE)) {
state.delete();
state.scrollToCursor();
}
if (keyPressed(K.ARROW_RIGHT)) {
if (shiftKeyDown()) {
@ -187,6 +209,7 @@ const update = () => {
} else {
state.setSelection(focus+1);
}
state.scrollToCursor();
}
if (keyPressed(K.ARROW_LEFT)) {
if (shiftKeyDown()) {
@ -194,6 +217,7 @@ const update = () => {
} else {
state.setSelection(focus-1);
}
state.scrollToCursor();
}
if (keyPressed(K.ARROW_DOWN)) {
if (shiftKeyDown()) {
@ -201,6 +225,7 @@ const update = () => {
} else {
state.setSelection({x: focusX, y: focusY+1});
}
state.scrollToCursor();
}
if (keyPressed(K.ARROW_UP)) {
if (shiftKeyDown()) {
@ -208,6 +233,7 @@ const update = () => {
} else {
state.setSelection({x: focusX, y: focusY-1});
}
state.scrollToCursor();
}
}