krzosa/text_editor
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Mouse scrolling, BUFFER_DEBUG, todo list

Browse Source
This commit is contained in:
Krzosa Karol
2024-07-21 08:09:38 +02:00
parent 675e4a10dd
commit 8de8938be1
4 changed files with 72 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/text_editor/buffer.cpp
View File

@@ -1,6 +1,7 @@
/*
https://code.visualstudio.com/blogs/2018/03/23/text-buffer-reimplementation
*/
#define BUFFER_DEBUG 0
void InitBuffer(Allocator allocator, Buffer *buffer) {
buffer->cap = 4096;
@@ -125,15 +126,6 @@ Int XYToPosWithoutNL(Buffer &buffer, XY xy) {
return pos;
}
void ValidateLineStarts(Buffer *buffer) {
Int line = 0;
for (Int i = 0; i < buffer->len; i += 1) {
Int l = PosToLine(*buffer, i);
Assert(l == line);
if (buffer->data[i] == L'\n') line += 1;
}
}
void UpdateLines(Buffer *buffer, Range range, String16 string) {
Array<Int> &ls = buffer->line_starts;
Int min_line_number = PosToLine(*buffer, range.min);
@@ -175,6 +167,15 @@ void UpdateLines(Buffer *buffer, Range range, String16 string) {
OffsetAllLinesForward(buffer, nl, &line_offset);
}
void ValidateLineStarts(Buffer *buffer) {
Int line = 0;
for (Int i = 0; i < buffer->len; i += 1) {
Int l = PosToLine(*buffer, i);
Assert(l == line);
if (buffer->data[i] == L'\n') line += 1;
}
}
void ReplaceText(Buffer *buffer, Range range, String16 string) {
Assert(range.max >= range.min);
Assert(range.max >= 0 && range.max <= buffer->len);
@@ -199,7 +200,9 @@ void ReplaceText(Buffer *buffer, Range range, String16 string) {
MemoryCopy(begin_add, string.data, string.len * sizeof(U16));
buffer->len = buffer->len + change_size;
#if BUFFER_DEBUG
ValidateLineStarts(buffer);
#endif
}
void TestBuffer() {

4
src/text_editor/buffer_multi_cursor.cpp
View File

@@ -88,7 +88,7 @@ void MergeSort(int64_t Count, Edit *First, Edit *Temp) {
}
void ApplyEdits(Buffer *buffer, Array<Edit> edits) {
#if DEBUG_BUILD
#if BUFFER_DEBUG
Assert(buffer->line_starts.len);
Assert(edits.len);
For(edits) {
@@ -119,7 +119,7 @@ void ApplyEdits(Buffer *buffer, Array<Edit> edits) {
edits = edits_copy;
}
#if DEBUG_BUILD
#if BUFFER_DEBUG
for (int64_t i = 0; i < edits.len - 1; i += 1) {
Assert(edits[i].range.min <= edits[i + 1].range.min);
}

27
src/text_editor/text_editor.cpp
View File

@@ -16,6 +16,27 @@
#include "view.cpp"
#include "view_draw.cpp"
/*
- Ctrl + Z, Ctrl + C - Undo redo history
- Ctrl + D - create new cursor at next occurence of word
- Ctrl + X, Ctrl + C, Ctrl + V - Copy paste
- Ctrl + Alt + Down - duplicate line down
- Shify + Alt + Down - make a cursor below
- Backspace, Delete, Enter
- Mouse anchor point and double click
- Mouse cursor changes
- Mouse scrolling
- Line highlight
- Color new lines and end of buffer
- Scrollbars
- Line numbers
- Test big files!!
- Colored strings
- multiple windows
- multiple views per window
*/
int main(void) {
InitScratch();
Test();
@@ -51,9 +72,9 @@ int main(void) {
view.buffer = CreateBuffer(Perm);
{
Scratch scratch;
for (int i = 0; i < 150; i += 1) {
// String s = Format(scratch, "line1: %d line2: %d line3: %d line4: %d line5: %d line6: %d line1: %d line2: %d line3: %d line4: %d line5: %d line6: %d\n", i, i, i, i, i, i, i, i, i, i, i, i);
String s = Format(scratch, "line %d\n", i);
for (int i = 0; i < 15000; i += 1) {
String s = Format(scratch, "line1: %d line2: %d line3: %d line4: %d line5: %d line6: %d line1: %d line2: %d line3: %d line4: %d line5: %d line6: %d\n", i, i, i, i, i, i, i, i, i, i, i, i);
// String s = Format(scratch, "line %d\n", i);
String16 s16 = ToString16(scratch, s);
ReplaceText(view.buffer, GetEndAsRange(*view.buffer), s16);
// ReplaceText(view.buffer, GetEndAsRange(*view.buffer), L" \n");

62
src/text_editor/view.cpp
View File

@@ -174,7 +174,12 @@ void HandleKeybindings(View *_view) {
Int new_front = MoveCaret(buf, front, i, IsKeyDown(KEY_LEFT_CONTROL));
it = ChangeFront(it, new_front);
} else {
it.range.max = it.range.min = MoveCaret(buf, it.range.max, i, IsKeyDown(KEY_LEFT_CONTROL));
Int p = keys[i] == KEY_RIGHT || keys[i] == KEY_DOWN ? it.range.max : it.range.min;
if (GetSize(it.range) == 0) {
it = MakeCaret(MoveCaret(buf, p, i, IsKeyDown(KEY_LEFT_CONTROL)));
} else {
it = MakeCaret(p);
}
}
}
}
@@ -229,6 +234,34 @@ void HandleKeybindings(View *_view) {
AfterEdit(&view, edits);
}
{
Vec2 mouse = GetMousePosition();
bool mouse_in_view = CheckCollisionPointRec(mouse, ToRectangle(view.rect));
Vec2 mworld = mouse - view.rect.min + view.scroll;
Vec2 pos = mworld / Vec2{view.char_spacing, view.line_spacing};
XY xy = {(Int)(pos.x), (Int)(pos.y)};
Int p = XYToPosWithoutNL(buf, xy);
if (mouse_in_view && IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
if (!IsKeyDown(KEY_LEFT_CONTROL)) {
view.carets.len = 0;
}
Add(&view.carets, MakeCaret(p, p));
} else if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
view.mouse_selecting = true;
}
}
if (view.mouse_selecting) {
if (!IsMouseButtonDown(MOUSE_BUTTON_LEFT)) view.mouse_selecting = false;
Caret &caret = *GetLast(view.carets);
caret = ChangeFront(caret, p);
MergeCarets(&view.carets);
}
}
// Scrolling with caret
// @refactor: this should happen after we calculate rect for the view
// Usually in other text editors apart from view there is also a 'window'
@@ -274,31 +307,4 @@ void HandleKeybindings(View *_view) {
Int line_chars = GetCharCountOfLongestLine(view.buffer[0]);
view.scroll.x = Clamp(view.scroll.x, 0.f, Max(0.f, (line_chars - 2) * view.char_spacing));
}
{
Vec2 mouse = GetMousePosition();
bool mouse_in_view = CheckCollisionPointRec(mouse, ToRectangle(view.rect));
if (mouse_in_view && IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
Vec2 mworld = mouse - view.rect.min + view.scroll;
Vec2 pos = mworld / Vec2{view.char_spacing, view.line_spacing};
XY xy = {(Int)(pos.x), (Int)(pos.y)};
Int p = XYToPosWithoutNL(buf, xy);
if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
if (!IsKeyDown(KEY_LEFT_CONTROL)) {
view.carets.len = 0;
}
Add(&view.carets, MakeCaret(p, p));
} else if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
view.mouse_selecting = true;
}
if (view.mouse_selecting) {
if (!IsMouseButtonDown(MOUSE_BUTTON_LEFT)) view.mouse_selecting = false;
Caret &caret = *GetLast(view.carets);
caret = ChangeFront(caret, p);
}
MergeCarets(&view.carets);
}
}
}