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This commit is contained in:
Clement Roblot 2024-08-02 23:08:24 +07:00
parent 2de925f2c6
commit 53f179c776
3 changed files with 19 additions and 13 deletions
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1
examples/component/input.cpp
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@ -74,7 +74,6 @@ int main() {
// TODO: Implement the double click on word to select the word // TODO: Implement the double click on word to select the word
// TODO: Implement the double click and drag to select word by word (optional) // TODO: Implement the double click and drag to select word by word (optional)
// TODO: Implement the tripple click to select an entire line // TODO: Implement the tripple click to select an entire line
// TODO: Call onSelectionChange_ only when the selection indeed did change, not at every render?
// TODO: Add a "selectable" flag in the pixel class and take it into account when selecting things // TODO: Add a "selectable" flag in the pixel class and take it into account when selecting things
renderer |= CatchEvent([&](Event event) { renderer |= CatchEvent([&](Event event) {

1
include/ftxui/dom/elements.hpp
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@ -40,6 +40,7 @@ typedef struct {
uint16_t endx = 0; uint16_t endx = 0;
uint16_t starty = 0; uint16_t starty = 0;
uint16_t endy = 0; uint16_t endy = 0;
bool changed = false;
} Region; } Region;
// Pipe elements into decorator togethers. // Pipe elements into decorator togethers.

28
src/ftxui/dom/selectable.cpp
View File

@ -12,7 +12,7 @@
namespace ftxui { namespace ftxui {
Region newSelection; Region selectedRegion;
namespace { namespace {
class Selectable : public NodeDecorator { class Selectable : public NodeDecorator {
@ -24,15 +24,18 @@ class Selectable : public NodeDecorator {
void Render(Screen& screen) override { void Render(Screen& screen) override {
Node::Render(screen); Node::Render(screen);
std::string selectedText = ""; std::string selectedText = "";
for (int y = std::min(newSelection.starty, newSelection.endy); y <= std::max(newSelection.starty, newSelection.endy); ++y) { for (int y = std::min(selectedRegion.starty, selectedRegion.endy); y <= std::max(selectedRegion.starty, selectedRegion.endy); ++y) {
for (int x = std::min(newSelection.startx, newSelection.endx); x <= std::max(newSelection.startx, newSelection.endx)-1; ++x) { for (int x = std::min(selectedRegion.startx, selectedRegion.endx); x <= std::max(selectedRegion.startx, selectedRegion.endx)-1; ++x) {
screen.PixelAt(x, y).inverted ^= true; screen.PixelAt(x, y).inverted ^= true;
selectedText += screen.PixelAt(x, y).character; selectedText += screen.PixelAt(x, y).character;
} }
} }
if(selectedRegion.changed == true) {
selectedRegion.changed = false;;
onSelectionChange_(selectedText); onSelectionChange_(selectedText);
} }
}
private: private:
std::function<void(const std::string)> onSelectionChange_; std::function<void(const std::string)> onSelectionChange_;
@ -58,16 +61,19 @@ bool selectableCatchEvent(Event event) {
if (mouse.button == Mouse::Left) { if (mouse.button == Mouse::Left) {
if (mouse.motion == Mouse::Pressed) { if (mouse.motion == Mouse::Pressed) {
newSelection.startx = mouse.x; selectedRegion.startx = mouse.x;
newSelection.starty = mouse.y; selectedRegion.starty = mouse.y;
newSelection.endx = mouse.x; selectedRegion.endx = mouse.x;
newSelection.endy = mouse.y; selectedRegion.endy = mouse.y;
selectedRegion.changed = true;
} else if (mouse.motion == Mouse::Released) { } else if (mouse.motion == Mouse::Released) {
newSelection.endx = mouse.x; selectedRegion.endx = mouse.x;
newSelection.endy = mouse.y; selectedRegion.endy = mouse.y;
selectedRegion.changed = true;
} else if (mouse.motion == Mouse::Moved) { } else if (mouse.motion == Mouse::Moved) {
newSelection.endx = mouse.x; selectedRegion.endx = mouse.x;
newSelection.endy = mouse.y; selectedRegion.endy = mouse.y;
selectedRegion.changed = true;
} }
return true; return true;