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fix: vscroll_indicator. Reserve one cell.

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ArthurSonzogni 2021-09-26 15:32:40 +02:00 committed by Arthur Sonzogni
parent c5ef0c7fb5
commit 76b2f17488
1 changed files with 16 additions and 14 deletions
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28
src/ftxui/dom/scroll_indicator.cpp
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@ -13,6 +13,19 @@ Element vscroll_indicator(Element child) {
class Impl : public NodeDecorator { class Impl : public NodeDecorator {
using NodeDecorator::NodeDecorator; using NodeDecorator::NodeDecorator;
void ComputeRequirement() override {
Node::ComputeRequirement();
requirement_ = children_[0]->requirement();
requirement_.min_x++;
}
void SetBox(Box box) override {
Node::SetBox(box);
if (box_.x_min > box_.x_max)
box_.x_max--;
children_[0]->SetBox(box);
}
void Render(Screen& screen) final { void Render(Screen& screen) final {
Node::Render(screen); Node::Render(screen);
@ -30,19 +43,8 @@ Element vscroll_indicator(Element child) {
bool up = (2 * y + -1 >= 2 * start_y) && (2 * y + -1 <= 2 * end_y); bool up = (2 * y + -1 >= 2 * start_y) && (2 * y + -1 <= 2 * end_y);
bool down = (2 * y + 0 >= 2 * start_y) && (2 * y + 0 <= 2 * end_y); bool down = (2 * y + 0 >= 2 * start_y) && (2 * y + 0 <= 2 * end_y);
if (up) { const char* c = up ? (down ? "┃" : "╹") : (down ? "╻" : " ");
if (down) { screen.PixelAt(x, y).character = c;
screen.PixelAt(x, y).character = "┃";
} else {
screen.PixelAt(x, y).character = "╹";
}
} else {
if (down) {
screen.PixelAt(x, y).character = "╻";
} else {
screen.PixelAt(x, y).character = " ";
}
}
screen.PixelAt(x, y).inverted = true; screen.PixelAt(x, y).inverted = true;
} }
}; };