Files
text_editor/src/text_editor/commands_window.cpp
2024-08-04 07:10:36 +02:00

870 lines
30 KiB
C++

void Command_Replace(View *view, String16 string) {
Buffer *buffer = GetBuffer(view->active_buffer);
Scratch scratch;
BeforeEdit(buffer, view->carets);
MergeCarets(view);
Array<Edit> edits = {scratch};
For(view->carets) AddEdit(&edits, it.range, string);
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets);
}
void Command_DuplicateLine(View *view, int direction) {
Assert(direction == DIR_UP || direction == DIR_DOWN);
Buffer *buffer = GetBuffer(view->active_buffer);
BeforeEdit(buffer, view->carets);
For(view->carets) it = MakeCaret(GetFront(it));
MergeCarets(view);
Scratch scratch;
Array<Edit> edits = {scratch};
For(view->carets) {
Int line = PosToLine(*buffer, it.range.min);
Range range = GetLineRange(*buffer, line);
String16 string = Copy(scratch, GetString(*buffer, range));
Int pos = direction == DIR_UP ? range.min : range.max;
AddEdit(&edits, Rng(pos), string);
}
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets);
For(view->carets) it = MakeCaret(MovePos(*buffer, it.range.min, direction, false));
}
Int FindRangeByPos(Array<Range> &ranges, Int pos) {
// binary search
Int low = 0;
Int high = ranges.len - 1;
Int result = -1;
while (low <= high) {
Int mid = low + (high - low) / 2;
Range range = ranges[mid];
if (pos >= range.min && pos < range.max) {
result = mid;
break;
}
if (range.min < pos) {
low = mid + 1;
} else {
high = mid - 1;
}
}
return result;
}
Array<Range> GetSelectedLinesSorted(Allocator allocator, View *view) {
Scratch scratch(allocator);
Buffer *buffer = GetBuffer(view->active_buffer);
Array<Caret> caret_copy = TightCopy(scratch, view->carets);
Array<Caret> temp = TightCopy(scratch, view->carets);
MergeSort(view->carets.len, caret_copy.data, temp.data);
Array<Range> result = {allocator};
For(caret_copy) {
Int min_line = PosToLine(*buffer, it.range.min);
Int max_line = PosToLine(*buffer, it.range.max);
Range line_range = {min_line, max_line + 1};
if (result.len == 0) {
Add(&result, line_range);
continue;
}
Range *last = GetLast(result);
if (AreOverlapping(*last, line_range)) {
last->max = Max(last->max, line_range.max);
} else {
Add(&result, line_range);
}
}
return result;
}
void Command_IndentSelectedLines(View *view, bool shift = false) {
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
BeforeEdit(buffer, view->carets);
MergeCarets(view);
Array<Range> line_ranges_to_indent = GetSelectedLinesSorted(scratch, view);
Array<Edit> edits = {scratch};
For(line_ranges_to_indent) {
for (Int i = it.min; i < it.max; i += 1) {
Range pos_range_of_line = GetLineRange(*buffer, i);
if (!shift) {
String16 whitespace_string = {L" ", StyleIndentSize};
AddEdit(&edits, {pos_range_of_line.min, pos_range_of_line.min}, whitespace_string);
} else {
String16 string = GetString(*buffer, pos_range_of_line);
Int whitespace_len = 0;
for (Int i = 0; i < StyleIndentSize && i < string.len && string.data[i] == ' '; i += 1) {
whitespace_len += 1;
}
AddEdit(&edits, {pos_range_of_line.min, pos_range_of_line.min + whitespace_len}, L"");
}
}
}
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets, !KILL_SELECTION);
view->update_scroll = false;
}
void Command_TrimTrailingWhitespace(View *view, bool dont_trim_lines_with_cursor) {
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
BeforeEdit(buffer, view->carets);
MergeCarets(view);
Array<Range> lines_to_skip_triming = {};
if (dont_trim_lines_with_cursor) lines_to_skip_triming = GetSelectedLinesSorted(scratch, view);
Array<Edit> edits = {scratch};
for (Int i = 0; i < buffer->line_starts.len; i += 1) {
Int range_index = FindRangeByPos(lines_to_skip_triming, i);
if (range_index != -1) continue;
Range range = GetLineRangeWithoutNL(*buffer, i);
Int whitespace_end = range.max;
for (; whitespace_end > range.min; whitespace_end -= 1) {
U16 w = buffer->data[whitespace_end - 1];
bool is_whitespace = w == ' ' || w == '\t' || w == '\v' || w == '\r';
if (!is_whitespace) break;
}
Range whitespace_range = {whitespace_end, range.max};
AddEdit(&edits, whitespace_range, L"");
}
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets, !KILL_SELECTION);
view->update_scroll = false;
}
void Command_KillSelectedLines(View *view) {
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
BeforeEdit(buffer, view->carets);
MergeCarets(view);
Array<Range> lines = GetSelectedLinesSorted(scratch, view);
Array<Edit> edits = {scratch};
For(lines) {
Range add_range = GetLineRange(*buffer, it.min);
for (Int i = it.min + 1; i < it.max; i += 1) {
Range line_range = GetLineRange(*buffer, i);
add_range.max = Max(line_range.max, add_range.max);
}
AddEdit(&edits, add_range, L"");
}
For(view->carets) {
Int line = PosToLine(*buffer, it.range.min);
Range range = GetLineRange(*buffer, line);
it.range.min = it.range.max = range.min;
}
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets, KILL_SELECTION);
}
bool SHIFT_PRESSED = true;
void Command_MoveCursorsByPageSize(Window *window, int direction, bool shift = false) {
Assert(direction == DIR_UP || direction == DIR_DOWN);
View &view = *GetActiveView(window);
Buffer *buffer = GetBuffer(view.active_buffer);
Rect2I visible_cells_rect = GetVisibleCells(window);
Int y = GetSize(visible_cells_rect).y - 2;
if (direction == DIR_UP) y = -y;
For(view.carets) {
XY xy = PosToXY(*buffer, GetFront(it));
if (direction == DIR_DOWN && xy.line == buffer->line_starts.len - 1) {
Range line_range = GetLineRange(*buffer, xy.line);
xy.col = line_range.max - line_range.min;
} else if (direction == DIR_UP && xy.line == 0) {
xy.col = 0;
}
xy.line += y;
Int pos = XYToPos(*buffer, xy);
if (shift) {
it = ChangeFront(it, pos);
} else {
it = MakeCaret(pos);
}
}
}
void Command_MoveCursorsToSide(View *view, int direction, bool shift = false) {
Assert(direction == DIR_LEFT || direction == DIR_RIGHT);
Buffer *buffer = GetBuffer(view->active_buffer);
For(view->carets) {
Int pos = GetFront(it);
if (direction == DIR_RIGHT) {
pos = GetLineEnd(buffer, pos);
} else {
pos = GetLineStart(buffer, pos);
}
if (shift) {
it = ChangeFront(it, pos);
} else {
it.range.max = it.range.min = pos;
}
}
}
void Command_Move(View *view, int direction, bool ctrl = false, bool shift = false) {
Assert(direction < DIR_COUNT);
Buffer *buffer = GetBuffer(view->active_buffer);
For(view->carets) {
Int front = GetFront(it);
switch (direction) {
case DIR_UP: {
} break;
case DIR_DOWN: {
if (ctrl && shift) {
Int pos = GetNextEmptyLineStart(buffer, front);
it = ChangeFront(it, pos);
} else if (ctrl) {
Int pos = GetNextEmptyLineStart(buffer, it.range.max);
it = MakeCaret(pos);
} else if (shift) {
Int pos = OffsetByLine(buffer, front, 1);
it = ChangeFront(it, pos);
} else {
if (GetSize(it.range) == 0) {
Int pos = OffsetByLine(buffer, it.range.max, 1);
it = MakeCaret(pos);
} else {
it = MakeCaret(it.range.max);
}
}
} break;
case DIR_LEFT: {
} break;
case DIR_RIGHT: {
} break;
}
}
}
void Command_Delete(View *view, int direction, bool ctrl = false) {
Assert(direction == DIR_LEFT || direction == DIR_RIGHT);
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
BeforeEdit(buffer, view->carets);
// Select things to delete
For(view->carets) {
if (GetSize(it.range)) continue;
Int pos = MovePos(*buffer, it.range.min, direction, ctrl);
it = MakeCaret(pos, it.range.min);
}
MergeCarets(view);
Array<Edit> edits = {scratch};
For(view->carets) AddEdit(&edits, it.range, {});
ApplyEdits(buffer, edits);
AfterEdit(buffer, &edits, &view->carets);
}
void Command_SelectAll(View *view, String16 needle) {
Buffer *buffer = GetBuffer(view->active_buffer);
String16 string_buffer = GetString(*buffer);
Int debug_id = 0;
for (Int pos = 0;;) {
Int index = 0;
String16 medium = Skip(string_buffer, pos);
if (!Seek(medium, needle, &index)) {
break;
}
Add(&view->carets, MakeCaret(pos + index + needle.len, pos + index));
pos += needle.len;
debug_id += 1;
}
MergeCarets(view);
}
void Command_CreateCursorVertical(View *_view, int direction) {
Assert(direction == DIR_UP || direction == DIR_DOWN);
View &view = *_view;
Buffer *buffer = GetBuffer(view.active_buffer);
Scratch scratch;
Array<Caret> arr = {scratch};
For(view.carets) {
if (PosToLine(*buffer, it.range.min) == PosToLine(*buffer, it.range.max)) {
Int f = MovePos(*buffer, GetFront(it), direction);
Int b = MovePos(*buffer, GetBack(it), direction);
Add(&arr, MakeCaret(f, b));
} else {
Int pos = direction == DIR_UP ? it.range.min : it.range.max;
Int min = MovePos(*buffer, pos, direction);
Add(&arr, MakeCaret(min));
}
}
For(arr) Add(&view.carets, it);
MergeCarets(_view);
}
void Command_SelectRangeOneCursor(View *view, Range range) {
Buffer *buffer = GetBuffer(view->active_buffer);
view->carets.len = 1;
view->carets[0] = MakeCaret(range.min, range.max);
}
void Command_SelectEntireBuffer(View *view) {
Buffer *buffer = GetBuffer(view->active_buffer);
view->carets.len = 1;
view->carets[0] = MakeCaret(0, buffer->len);
}
void Command_EvalLua(View *view, String16 string) {
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
String16 eval_result = EvalString(scratch, string);
if (eval_result.len) {
Command_SelectEntireBuffer(view);
Command_Replace(view, eval_result);
Command_SelectRangeOneCursor(view, {});
Command_Replace(view, L"\n");
Command_SelectRangeOneCursor(view, {});
}
else {
Range range = GetLineRangeWithoutNL(*buffer, 0);
Command_SelectRangeOneCursor(view, range);
Command_Replace(view, {});
}
}
// Merge carets that overlap, this needs to be handled before any edits to
// make sure overlapping edits won't happen.
//
// mouse_selection_anchor is special case for mouse handling !
void MergeCarets(View *view, Range *mouse_selection_anchor) {
ProfileFunction();
Buffer *buffer = GetBuffer(view->active_buffer);
For(view->carets) it.range = Clamp(*buffer, it.range);
Caret first_caret = view->carets.data[0];
Scratch scratch;
Array<Caret> c1 = TightCopy(scratch, view->carets);
MergeSort(view->carets.len, c1.data, view->carets.data);
view->carets.len = 0;
Int first_caret_index = 0;
Add(&view->carets, c1[0]);
for (Int i = 1; i < c1.len; i += 1) {
Caret &it = c1[i];
Caret *last = GetLast(view->carets);
if (AreOverlapping(*last, it)) {
last->range.max = Max(last->range.max, it.range.max);
if (mouse_selection_anchor) *mouse_selection_anchor = last->range;
} else {
Add(&view->carets, it);
}
if (AreEqual(it, first_caret)) first_caret_index = view->carets.len - 1;
}
Swap(&view->carets[first_caret_index], &view->carets[0]);
}
void WindowCommand(Event event, Window *window, View *view) {
ProfileFunction();
Buffer *buffer = GetBuffer(view->active_buffer);
if (Ctrl(SDLK_F2)) {
LoadBigLine(buffer);
} else if (Press(SDLK_F2)) {
LoadBigText(buffer);
}
if (Press(SDLK_ESCAPE)) {
if (window->deactivate_on_escape) {
SetActiveWindow(GetLastActiveWindow());
} else {
view->carets.len = 1;
}
}
// Underline
if (event.ctrl) {
Caret caret = view->carets[0];
if (GetSize(caret.range) == 0) {
view->underline_pos[view->underline_count++] = caret.range.min;
Assert(view->underline_count <= 2);
}
{
Vec2I mouse = MouseVec2I();
Vec2I mworld = mouse - window->document_rect.min + view->scroll;
Vec2I pos = mworld / Vec2I{FontCharSpacing, FontLineSpacing};
XY xy = {(Int)(pos.x), (Int)(pos.y)};
Int p = XYToPosErrorOutOfBounds(*buffer, xy);
if (p != -1) {
view->underline_pos[view->underline_count++] = p;
Assert(view->underline_count <= 2);
if (Mouse(LEFT)) {
Range enclose = EncloseLoadWord(buffer, p);
String16 string = GetString(*buffer, enclose);
Open(string);
}
}
}
}
if (CtrlAlt(SDLK_DOWN)) {
Command_DuplicateLine(view, DIR_DOWN);
} else if (AltShift(SDLK_DOWN)) {
Command_CreateCursorVertical(view, DIR_DOWN);
} else if (CtrlShift(SDLK_DOWN)) {
Command_Move(view, DIR_DOWN, CTRL_PRESSED, SHIFT_PRESSED);
} else if (Ctrl(SDLK_DOWN)) {
Command_Move(view, DIR_DOWN, CTRL_PRESSED);
} else if (Shift(SDLK_DOWN)) {
Command_Move(view, DIR_DOWN, false, SHIFT_PRESSED);
} else if (Press(SDLK_DOWN)) {
Command_Move(view, DIR_DOWN);
}
if (CtrlAlt(SDLK_UP)) {
Command_DuplicateLine(view, DIR_UP);
} else if (AltShift(SDLK_UP)) {
Command_CreateCursorVertical(view, DIR_UP);
} else if (CtrlShift(SDLK_UP)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_UP, CTRL_PRESSED));
} else if (Ctrl(SDLK_UP)) {
For(view->carets) it = MakeCaret(MovePos(*buffer, it.range.min, DIR_UP, CTRL_PRESSED));
} else if (Shift(SDLK_UP)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_UP));
} else if (Press(SDLK_UP)) {
For(view->carets) {
if (GetSize(it.range) == 0) {
it = MakeCaret(MovePos(*buffer, it.range.min, DIR_UP));
} else {
it = MakeCaret(it.range.min);
}
}
}
if (CtrlShift(SDLK_LEFT)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_LEFT, true));
} else if (Ctrl(SDLK_LEFT)) {
For(view->carets) {
if (GetSize(it.range) != 0 && GetFront(it) != it.range.min) {
it = MakeCaret(it.range.min);
} else {
it = MakeCaret(MovePos(*buffer, it.range.min, DIR_LEFT, true));
}
}
} else if (Shift(SDLK_LEFT)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_LEFT, false));
} else if (Press(SDLK_LEFT)) {
For(view->carets) {
if (GetSize(it.range) == 0) {
it = MakeCaret(MovePos(*buffer, it.range.min, DIR_LEFT, false));
} else {
it = MakeCaret(it.range.min);
}
}
}
if (CtrlShift(SDLK_RIGHT)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_RIGHT, true));
} else if (Ctrl(SDLK_RIGHT)) {
For(view->carets) {
if (GetSize(it.range) != 0 && GetFront(it) != it.range.max) {
it = MakeCaret(it.range.max);
} else {
it = MakeCaret(MovePos(*buffer, it.range.max, DIR_RIGHT, true));
}
}
} else if (Shift(SDLK_RIGHT)) {
For(view->carets) it = ChangeFront(it, MovePos(*buffer, GetFront(it), DIR_RIGHT, false));
} else if (Press(SDLK_RIGHT)) {
For(view->carets) {
if (GetSize(it.range) == 0) {
it = MakeCaret(MovePos(*buffer, it.range.max, DIR_RIGHT, false));
} else {
it = MakeCaret(it.range.max);
}
}
}
if (CtrlShift(SDLK_Z)) {
RedoEdit(buffer, &view->carets);
} else if (Ctrl(SDLK_Z)) {
UndoEdit(buffer, &view->carets);
}
if (Ctrl(SDLK_C)) {
Command_Copy(view);
} else if (Ctrl(SDLK_V)) {
Command_Paste(view);
} else if (Ctrl(SDLK_X)) {
Command_Copy(view);
Command_Replace(view, L"");
}
if (Ctrl(SDLK_A)) {
Command_SelectEntireBuffer(view);
view->update_scroll = false;
}
if (Shift(SDLK_PAGEUP)) {
Command_MoveCursorsByPageSize(window, DIR_UP, SHIFT_PRESSED);
} else if (Press(SDLK_PAGEUP)) {
Command_MoveCursorsByPageSize(window, DIR_UP);
}
if (Shift(SDLK_PAGEDOWN)) {
Command_MoveCursorsByPageSize(window, DIR_DOWN, SHIFT_PRESSED);
} else if (Press(SDLK_PAGEDOWN)) {
Command_MoveCursorsByPageSize(window, DIR_DOWN);
}
if (Shift(SDLK_HOME)) {
Command_MoveCursorsToSide(view, DIR_LEFT, SHIFT_PRESSED);
} else if (Press(SDLK_HOME)) {
Command_MoveCursorsToSide(view, DIR_LEFT);
}
if (Shift(SDLK_END)) {
Command_MoveCursorsToSide(view, DIR_RIGHT, SHIFT_PRESSED);
} else if (Press(SDLK_END)) {
Command_MoveCursorsToSide(view, DIR_RIGHT);
}
bool search = false;
if (Shift(SDLK_TAB)) {
Command_IndentSelectedLines(view, SHIFT_PRESSED);
search = true;
} else if (Press(SDLK_TAB)) {
Command_IndentSelectedLines(view);
search = true;
}
if (Ctrl(SDLK_W)) {
Int pos = view->carets[0].range.min;
view->carets[0] = MakeCaret(GetPrevWordStart(buffer, pos));
}
if (Ctrl(SDLK_R)) {
Int pos = view->carets[0].range.min;
view->carets[0] = MakeCaret(GetWordStart(buffer, pos));
}
if (CtrlShift(SDLK_K)) {
Command_KillSelectedLines(view);
}
if (Ctrl(SDLK_BACKSPACE)) {
Command_Delete(view, DIR_LEFT, CTRL_PRESSED);
search = true;
} else if (Press(SDLK_BACKSPACE)) {
Command_Delete(view, DIR_LEFT);
search = true;
}
if (Ctrl(SDLK_DELETE)) {
Command_Delete(view, DIR_RIGHT, CTRL_PRESSED);
search = true;
} else if (Press(SDLK_DELETE)) {
Command_Delete(view, DIR_RIGHT);
search = true;
}
if (event.text) {
Scratch scratch;
String string = event.text;
String16 string16 = ToString16(scratch, string);
Window *window = GetActiveWindow();
View *view = GetActiveView(window);
Command_Replace(view, string16);
search = true;
}
if (Ctrl(SDLK_D)) {
String16 string = GetString(*buffer, view->carets[0].range);
Caret caret = FindInBuffer(buffer, string, view->carets[0], true);
Insert(&view->carets, caret, 0);
MergeCarets(view);
}
if (Ctrl(SDLK_F3)) {
Buffer *search_buffer = GetBuffer("*search*");
String16 search_string = GetString(*search_buffer);
Caret caret = FindInBuffer(buffer, search_string, view->carets[0], true);
Insert(&view->carets, caret, 0);
MergeCarets(view);
} else if (Press(SDLK_F3)) {
Buffer *search_buffer = GetBuffer("*search*");
String16 search_string = GetString(*search_buffer);
Caret caret = FindInBuffer(buffer, search_string, view->carets[0], true);
view->carets.len = 1;
view->carets[0] = caret;
}
if (window->id.id == SearchWindowID.id) {
Window *seek_window = GetWindow(GetLastActiveWindow());
View *seek_view = GetView(seek_window->active_view);
Buffer *seek_buffer = GetBuffer(seek_view->active_buffer);
String16 needle = GetString(*buffer);
if (search) {
seek_view->carets[0] = FindInBuffer(seek_buffer, needle, seek_view->carets[0]);
seek_view->carets.len = 1;
}
if (Alt(SDLK_RETURN)) {
Command_SelectAll(seek_view, needle);
SetActiveWindow(seek_window->id);
} else if (Ctrl(SDLK_RETURN)) {
Caret caret = FindInBuffer(seek_buffer, needle, seek_view->carets[0], true);
Insert(&seek_view->carets, caret, 0);
MergeCarets(seek_view);
} else if (Press(SDLK_RETURN)) {
Caret caret = FindInBuffer(seek_buffer, needle, seek_view->carets[0], true);
seek_view->carets.len = 1;
seek_view->carets[0] = caret;
}
}
// @todo: consider making this view command
if (window->fuzzy_search && search) {
Scratch scratch;
String16 first_line_string = GetLineStringWithoutNL(*buffer, 0);
Array<FuzzyPair> ratings = FuzzySearchLines(scratch, buffer, 1, buffer->line_starts.len, first_line_string);
Buffer *temp_buffer = CreateTempBuffer(scratch, buffer->cap);
ReplaceText(temp_buffer, GetEndAsRange(*temp_buffer), first_line_string);
ReplaceText(temp_buffer, GetEndAsRange(*temp_buffer), L"\n");
For(ratings) {
String16 s = GetLineStringWithoutNL(*buffer, it.index);
if (s.len == 0) continue;
ReplaceText(temp_buffer, GetEndAsRange(*temp_buffer), s);
ReplaceText(temp_buffer, GetEndAsRange(*temp_buffer), L"\n");
}
Caret caret = view->carets[0];
Command_SelectEntireBuffer(view);
Command_Replace(view, GetString(*temp_buffer));
view->carets[0] = caret;
}
if (window->fuzzy_search) {
if (Press(SDLK_RETURN)) {
Scratch scratch;
Buffer *buffer = GetBuffer(view->active_buffer);
Int line = PosToLine(*buffer, GetFront(view->carets[0]));
if (line == 0) line = 1;
String16 string = GetLineStringWithoutNL(*buffer, line);
EvalString(scratch, string);
// Clear text
Command_SelectRangeOneCursor(view, GetLineRangeWithoutNL(*buffer, 0));
Command_Replace(view, {});
}
} else if (window->id.id == SearchWindowID.id) {
} else {
if (Ctrl(SDLK_RETURN)) {
Command_MoveCursorsToSide(view, DIR_RIGHT);
Command_Replace(view, L"\n");
} else if (Press(SDLK_RETURN)) {
Command_Replace(view, L"\n");
}
}
if (Ctrl(SDLK_S)) {
if (StyleTrimWhitespaceOnSave) {
bool dont_trim_lines_with_cursor = true;
Command_TrimTrailingWhitespace(view, dont_trim_lines_with_cursor);
}
String16 string16 = GetString(*buffer);
Scratch scratch;
String string = ToString(scratch, string16);
bool success = false;
success = WriteFile(buffer->name, string);
if (success) {
buffer->dirty = false;
} else {
ReportWarningf("Failed to save file with name: %.*s", FmtString(buffer->name));
}
}
{
Vec2I mouse = MouseVec2I();
// Special case for full-screen where we can have document
// aligned with monitor screen in which case mouse cursor cannot
// be smaller then 0 which means we cannot scroll
if (mouse.y == 0 && window->document_rect.min.y == 0) {
float x, y;
SDL_GetGlobalMouseState(&x, &y);
if (y == 0) {
mouse.y = -10;
}
}
bool mouse_in_document = CheckCollisionPointRec(mouse, window->document_rect);
bool mouse_in_scrollbar = CheckCollisionPointRec(mouse, window->scrollbar_rect);
bool scrollbar_action = mouse_in_scrollbar || window->mouse_selecting_scrollbar;
bool document_action = false;
{
bool a = mouse_in_document && IsMouseEvent(event.kind);
bool b = window->mouse_selecting && !mouse_in_document;
document_action = a || b;
}
if (!scrollbar_action && document_action) {
Vec2I mworld = mouse - window->document_rect.min + view->scroll;
Vec2I pos = mworld / Vec2I{FontCharSpacing, FontLineSpacing};
XY xy = {(Int)(pos.x), (Int)(pos.y)};
Int p = XYToPosWithoutNL(*buffer, xy);
if (mouse_in_document && Mouse(LEFT) && event.shift) {
Caret *c = &view->carets[0];
*c = ChangeFront(*c, p);
} else if (mouse_in_document && Mouse(LEFT) && event.mouse_double_click) {
Caret *c = &view->carets[0];
if (InBounds({c->range.min - 1, c->range.max + 1}, p)) {
c->range = EncloseWord(buffer, p);
view->selection_anchor = c->range;
} else {
view->selection_anchor = Rng(p);
}
} else if (mouse_in_document && Mouse(LEFT) && event.alt) {
Insert(&view->carets, MakeCaret(p, p), 0);
view->selection_anchor = view->carets[0].range;
} else if (mouse_in_document && Mouse(LEFT)) {
view->carets.len = 0;
Insert(&view->carets, MakeCaret(p, p), 0);
view->selection_anchor = view->carets[0].range;
}
if (mouse_in_document && Mouse(LEFT)) {
window->mouse_selecting = true;
}
if (window->mouse_selecting) {
if (Mouse(LEFT_UP)) {
window->mouse_selecting = false;
}
MergeCarets(view, &view->selection_anchor);
Caret &caret = view->carets[0];
if (view->selection_anchor.min > p) {
caret = MakeCaret(p, view->selection_anchor.max);
} else if (view->selection_anchor.max < p) {
caret = MakeCaret(p, view->selection_anchor.min);
} else {
caret = MakeCaret(view->selection_anchor.max, view->selection_anchor.min);
}
MergeCarets(view, &view->selection_anchor);
}
} else if (!(mouse_in_document || window->mouse_selecting) && mouse_in_scrollbar || window->mouse_selecting_scrollbar) {
Vec2 mouse_vec2 = MouseVec2();
Scroller s = ComputeScrollerRect(window);
double size_y = (double)GetSize(window->scrollbar_rect).y;
double p = mouse_vec2.y - window->scrollbar_rect.min.y;
if (Mouse(LEFT)) {
window->mouse_selecting_scrollbar = true;
} else if (Mouse(LEFT_UP)) {
window->mouse_selecting_scrollbar = false;
}
if (Mouse(LEFT)) {
if (mouse_vec2.y < s.rect.min.y || mouse_vec2.y > s.rect.max.y) {
view->scroll.y = (Int)(p / size_y * (double)s.line_count * (double)FontLineSpacing);
window->mouse_scroller_offset = -(double)GetSize(s.rect).y / 2.0 / size_y;
} else {
window->mouse_scroller_offset = (s.rect.min.y - p) / size_y;
}
}
if (window->mouse_selecting_scrollbar) {
double v = p / size_y;
v = v + (window->mouse_scroller_offset);
view->scroll.y = (Int)(v * (double)s.line_count * (double)FontLineSpacing);
}
}
}
}
void UpdateScroll(Window *window, bool update_caret_scrolling) {
ProfileFunction();
View *view = GetActiveView(window);
Buffer *buffer = GetBuffer(view->active_buffer);
// Scrolling with caret
if (update_caret_scrolling) {
Caret c = view->carets[0];
Int front = GetFront(c);
XY xy = PosToXY(*buffer, front);
Rect2I visible = GetVisibleCells(window);
Vec2I visible_cells = GetSize(visible);
Vec2I visible_size = visible_cells * Vec2I{FontCharSpacing, FontLineSpacing};
Vec2I rect_size = GetSize(window->document_rect);
if (xy.line >= visible.max.y - 2) {
Int set_view_at_line = xy.line - (visible_cells.y - 1);
Int cut_off_y = Max((Int)0, visible_size.y - rect_size.y);
view->scroll.y = (set_view_at_line * FontLineSpacing) + cut_off_y;
}
if (xy.line < visible.min.y + 1) {
view->scroll.y = xy.line * FontLineSpacing;
}
if (xy.col >= visible.max.x - 1) {
Int set_view_at_line = xy.col - (visible_cells.x - 1);
Int cut_off_x = Max((Int)0, visible_size.x - rect_size.x);
view->scroll.x = (set_view_at_line * FontCharSpacing) + cut_off_x;
}
if (xy.col <= visible.min.x) {
view->scroll.x = xy.col * FontCharSpacing;
}
}
// Clip scroll
{
Int last_line = LastLine(*buffer);
view->scroll.y = Clamp(view->scroll.y, (Int)0, Max((Int)0, (last_line - 1) * FontLineSpacing));
// @note:
// GetCharCountOfLongestLine is a bottleneck, there is probably an algorithm for
// calculating this value incrementally but do we even need X scrollbar or x clipping?
view->scroll.x = ClampBottom(view->scroll.x, (Int)0);
}
}