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Add lines to make understandable when anchors are snapped

This commit is contained in:
Gilles Roudiere 2017-07-30 17:59:57 +02:00
parent b329cb9c71
commit 3264cea7ae
2 changed files with 86 additions and 23 deletions
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107
editor/plugins/canvas_item_editor_plugin.cpp
View File

@ -775,23 +775,40 @@ CanvasItemEditor::DragType CanvasItemEditor::_get_resize_handle_drag_type(const
return DRAG_NONE;
}
Vector2 CanvasItemEditor::_anchor_snap(Vector2 anchor) {
Vector2 CanvasItemEditor::_anchor_snap(const Vector2 anchor, bool *snapped_x, bool *snapped_y) {
Vector2 result = anchor;
if (snapped_x)
*snapped_x = false;
if (snapped_y)
*snapped_y = false;
float radius = 0.05 / zoom;
if (fabs(anchor.x - ANCHOR_BEGIN) < radius) {
anchor.x = ANCHOR_BEGIN;
} else if (fabs(anchor.x - ANCHOR_CENTER) < radius) {
anchor.x = ANCHOR_CENTER;
} else if (fabs(anchor.x - ANCHOR_END) < radius) {
anchor.x = ANCHOR_END;
if (fabs(result.x - ANCHOR_BEGIN) < radius) {
result.x = ANCHOR_BEGIN;
if (snapped_x)
*snapped_x = true;
} else if (fabs(result.x - ANCHOR_CENTER) < radius) {
result.x = ANCHOR_CENTER;
if (snapped_x)
*snapped_x = true;
} else if (fabs(result.x - ANCHOR_END) < radius) {
result.x = ANCHOR_END;
if (snapped_x)
*snapped_x = true;
}
if (fabs(anchor.y - ANCHOR_BEGIN) < radius) {
anchor.y = ANCHOR_BEGIN;
} else if (fabs(anchor.y - ANCHOR_CENTER) < radius) {
anchor.y = ANCHOR_CENTER;
} else if (fabs(anchor.y - ANCHOR_END) < radius) {
anchor.y = ANCHOR_END;
if (fabs(result.y - ANCHOR_BEGIN) < radius) {
result.y = ANCHOR_BEGIN;
if (snapped_y)
*snapped_y = true;
} else if (fabs(result.y - ANCHOR_CENTER) < radius) {
result.y = ANCHOR_CENTER;
if (snapped_y)
*snapped_y = true;
} else if (fabs(result.y - ANCHOR_END) < radius) {
result.y = ANCHOR_END;
if (snapped_y)
*snapped_y = true;
}
return anchor;
return result;
}
Vector2 CanvasItemEditor::_anchor_to_position(Control *p_control, Vector2 anchor) {
ERR_FAIL_COND_V(!p_control, Vector2());
@ -1991,15 +2008,61 @@ void CanvasItemEditor::_viewport_draw() {
if (tool == TOOL_SELECT) {
// Draw the anchors
Rect2 anchor_rects[4];
anchor_rects[0] = Rect2(xform.xform(_anchor_to_position(control, Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_TOP)))), anchor_handle->get_size());
anchor_rects[1] = Rect2(xform.xform(_anchor_to_position(control, Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_TOP)))), Point2(-anchor_handle->get_size().x, anchor_handle->get_size().y));
anchor_rects[2] = Rect2(xform.xform(_anchor_to_position(control, Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_BOTTOM)))), -anchor_handle->get_size());
anchor_rects[3] = Rect2(xform.xform(_anchor_to_position(control, Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_BOTTOM)))), Point2(anchor_handle->get_size().x, -anchor_handle->get_size().y));
Vector2 anchors[4];
anchors[0] = Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_TOP));
anchors[1] = Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_TOP));
anchors[2] = Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_BOTTOM));
anchors[3] = Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_BOTTOM));
anchor_rects[0].position -= anchor_handle->get_size();
anchor_rects[1].position -= Vector2(0.0, anchor_handle->get_size().y);
anchor_rects[3].position -= Vector2(anchor_handle->get_size().x, 0.0);
Vector2 anchors_pos[4];
for (int i = 0; i < 4; i++) {
anchors_pos[i] = xform.xform(_anchor_to_position(control, anchors[i]));
}
// Get which anchor is dragged
int dragged_anchor = -1;
switch (drag) {
case DRAG_ANCHOR_TOP_LEFT:
dragged_anchor = 0;
break;
case DRAG_ANCHOR_TOP_RIGHT:
dragged_anchor = 1;
break;
case DRAG_ANCHOR_BOTTOM_RIGHT:
dragged_anchor = 2;
break;
case DRAG_ANCHOR_BOTTOM_LEFT:
dragged_anchor = 3;
break;
}
if (dragged_anchor >= 0) {
// Draw the 4 lines when dragged
bool snapped_x, snapped_y;
Color color_snapped = Color(0.64, 0.93, 0.67, 0.5);
Color color_base = Color(0.8, 0.8, 0.8, 0.5);
Vector2 corners_pos[4];
for (int i = 0; i < 4; i++) {
corners_pos[i] = xform.xform(_anchor_to_position(control, Vector2((i == 0 || i == 3) ? ANCHOR_BEGIN : ANCHOR_END, (i <= 1) ? ANCHOR_BEGIN : ANCHOR_END)));
}
for (int i = 0; i < 4; i++) {
float anchor_val = (i % 2 == 0) ? anchors[i].x : anchors[i].y;
anchor_val = (i >= 2) ? ANCHOR_END - anchor_val : anchor_val;
Vector2 line_start = Vector2::linear_interpolate(corners_pos[i], corners_pos[(i + 1) % 4], anchor_val);
Vector2 line_end = Vector2::linear_interpolate(corners_pos[(i + 3) % 4], corners_pos[(i + 2) % 4], anchor_val);
_anchor_snap(anchors[i], &snapped_x, &snapped_y);
viewport->draw_line(line_start, line_end, ((i % 2 == 0 && snapped_x) || (i % 2 == 1 && snapped_y)) ? color_snapped : color_base, (i == dragged_anchor || (i + 3) % 4 == dragged_anchor) ? 2 : 1);
}
}
Rect2 anchor_rects[4];
anchor_rects[0] = Rect2(anchors_pos[0] - anchor_handle->get_size(), anchor_handle->get_size());
anchor_rects[1] = Rect2(anchors_pos[1] - Vector2(0.0, anchor_handle->get_size().y), Point2(-anchor_handle->get_size().x, anchor_handle->get_size().y));
anchor_rects[2] = Rect2(anchors_pos[2], -anchor_handle->get_size());
anchor_rects[3] = Rect2(anchors_pos[3] - Vector2(anchor_handle->get_size().x, 0.0), Point2(anchor_handle->get_size().x, -anchor_handle->get_size().y));
for (int i = 0; i < 4; i++) {
anchor_handle->draw_rect(ci, anchor_rects[i]);

2
editor/plugins/canvas_item_editor_plugin.h
View File

@ -334,7 +334,7 @@ class CanvasItemEditor : public VBoxContainer {
void _prepare_drag(const Point2 &p_click_pos);
DragType _get_anchor_handle_drag_type(const Point2 &p_click, Vector2 &r_point);
Vector2 _anchor_snap(Vector2 anchor);
Vector2 _anchor_snap(const Vector2 anchor, bool *snapped_x = NULL, bool *snapped_y = NULL);
Vector2 _anchor_to_position(Control *p_control, Vector2 anchor);
Vector2 _position_to_anchor(Control *p_control, Vector2 position);