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Incorporate min and max zoom limits into the EditorZoomWidget

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This commit is contained in:
MewPurPur 2023-09-17 18:33:02 +03:00
parent 5c43e4c1ef
commit 44d782681c
5 changed files with 47 additions and 22 deletions
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45
editor/gui/editor_zoom_widget.cpp
View File

@ -70,12 +70,36 @@ float EditorZoomWidget::get_zoom() {
}
void EditorZoomWidget::set_zoom(float p_zoom) {
if (p_zoom > 0 && p_zoom != zoom) {
zoom = p_zoom;
float new_zoom = CLAMP(p_zoom, min_zoom, max_zoom);
if (zoom != new_zoom) {
zoom = new_zoom;
_update_zoom_label();
}
}
float EditorZoomWidget::get_min_zoom() {
return min_zoom;
}
float EditorZoomWidget::get_max_zoom() {
return max_zoom;
}
void EditorZoomWidget::setup_zoom_limits(float p_min, float p_max) {
ERR_FAIL_COND(p_min < 0 || p_min > p_max);
min_zoom = p_min;
max_zoom = p_max;
if (zoom > max_zoom) {
set_zoom(max_zoom);
emit_signal(SNAME("zoom_changed"), zoom);
} else if (zoom < min_zoom) {
set_zoom(min_zoom);
emit_signal(SNAME("zoom_changed"), zoom);
}
}
void EditorZoomWidget::set_zoom_by_increments(int p_increment_count, bool p_integer_only) {
// Remove editor scale from the index computation.
const float zoom_noscale = zoom / MAX(1, EDSCALE);
@ -97,7 +121,7 @@ void EditorZoomWidget::set_zoom_by_increments(int p_increment_count, bool p_inte
}
} else {
if (p_increment_count >= 1) {
// Zooming. Convert the current zoom into a denominator.
// Zooming in. Convert the current zoom into a denominator.
float new_zoom = 1.0 / Math::ceil(1.0 / zoom_noscale - p_increment_count);
if (Math::is_equal_approx(zoom_noscale, new_zoom)) {
// New zoom is identical to the old zoom, so try again.
@ -106,7 +130,7 @@ void EditorZoomWidget::set_zoom_by_increments(int p_increment_count, bool p_inte
}
set_zoom(new_zoom * MAX(1, EDSCALE));
} else {
// Dezooming. Convert the current zoom into a denominator.
// Zooming out. Convert the current zoom into a denominator.
float new_zoom = 1.0 / Math::floor(1.0 / zoom_noscale - p_increment_count);
if (Math::is_equal_approx(zoom_noscale, new_zoom)) {
// New zoom is identical to the old zoom, so try again.
@ -118,9 +142,9 @@ void EditorZoomWidget::set_zoom_by_increments(int p_increment_count, bool p_inte
}
} else {
// Base increment factor defined as the twelveth root of two.
// This allow a smooth geometric evolution of the zoom, with the advantage of
// This allows for a smooth geometric evolution of the zoom, with the advantage of
// visiting all integer power of two scale factors.
// note: this is analogous to the 'semitones' interval in the music world
// Note: this is analogous to the 'semitone' interval in the music world
// In order to avoid numerical imprecisions, we compute and edit a zoom index
// with the following relation: zoom = 2 ^ (index / 12)
@ -179,10 +203,11 @@ EditorZoomWidget::EditorZoomWidget() {
zoom_reset = memnew(Button);
zoom_reset->set_flat(true);
zoom_reset->add_theme_style_override("normal", memnew(StyleBoxEmpty));
zoom_reset->add_theme_style_override("hover", memnew(StyleBoxEmpty));
zoom_reset->add_theme_style_override("focus", memnew(StyleBoxEmpty));
zoom_reset->add_theme_style_override("pressed", memnew(StyleBoxEmpty));
Ref<StyleBoxEmpty> empty_stylebox = memnew(StyleBoxEmpty);
zoom_reset->add_theme_style_override("normal", empty_stylebox);
zoom_reset->add_theme_style_override("hover", empty_stylebox);
zoom_reset->add_theme_style_override("focus", empty_stylebox);
zoom_reset->add_theme_style_override("pressed", empty_stylebox);
add_child(zoom_reset);
zoom_reset->add_theme_constant_override("outline_size", Math::ceil(2 * EDSCALE));
zoom_reset->add_theme_color_override("font_outline_color", Color(0, 0, 0));

7
editor/gui/editor_zoom_widget.h
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@ -42,6 +42,8 @@ class EditorZoomWidget : public HBoxContainer {
Button *zoom_plus = nullptr;
float zoom = 1.0;
float min_zoom = 1.0 / 128;
float max_zoom = 128.0;
void _update_zoom_label();
void _button_zoom_minus();
void _button_zoom_reset();
@ -57,6 +59,11 @@ public:
float get_zoom();
void set_zoom(float p_zoom);
void set_zoom_by_increments(int p_increment_count, bool p_integer_only = false);
float get_min_zoom();
float get_max_zoom();
// It's best to setup simultaneously, so min < max can be checked easily.
void setup_zoom_limits(float p_min, float p_max);
// Sets the shortcut context for the zoom buttons. By default their context is this EditorZoomWidget control.
void set_shortcut_context(Node *p_node) const;
};

14
editor/plugins/canvas_item_editor_plugin.cpp
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@ -60,11 +60,6 @@
#include "scene/resources/packed_scene.h"
#include "scene/resources/style_box_texture.h"
// Min and Max are power of two in order to play nicely with successive increment.
// That way, we can naturally reach a 100% zoom from boundaries.
constexpr real_t MIN_ZOOM = 1. / 128;
constexpr real_t MAX_ZOOM = 128;
#define RULER_WIDTH (15 * EDSCALE)
constexpr real_t SCALE_HANDLE_DISTANCE = 25;
constexpr real_t MOVE_HANDLE_DISTANCE = 25;
@ -4100,10 +4095,9 @@ void CanvasItemEditor::_update_scroll(real_t) {
}
void CanvasItemEditor::_zoom_on_position(real_t p_zoom, Point2 p_position) {
p_zoom = CLAMP(p_zoom, MIN_ZOOM, MAX_ZOOM);
p_zoom = CLAMP(p_zoom, zoom_widget->get_min_zoom(), zoom_widget->get_max_zoom());
if (p_zoom == zoom) {
zoom_widget->set_zoom(p_zoom);
return;
}
@ -4113,12 +4107,12 @@ void CanvasItemEditor::_zoom_on_position(real_t p_zoom, Point2 p_position) {
view_offset += p_position / prev_zoom - p_position / zoom;
// We want to align in-scene pixels to screen pixels, this prevents blurry rendering
// in small details (texts, lines).
// of small details (texts, lines).
// This correction adds a jitter movement when zooming, so we correct only when the
// zoom factor is an integer. (in the other cases, all pixels won't be aligned anyway)
const real_t closest_zoom_factor = Math::round(zoom);
if (Math::is_zero_approx(zoom - closest_zoom_factor)) {
// make sure scene pixel at view_offset is aligned on a screen pixel
// Make sure scene pixel at view_offset is aligned on a screen pixel.
Vector2 view_offset_int = view_offset.floor();
Vector2 view_offset_frac = view_offset - view_offset_int;
view_offset = view_offset_int + (view_offset_frac * closest_zoom_factor).round() / closest_zoom_factor;
@ -5077,9 +5071,9 @@ CanvasItemEditor::CanvasItemEditor() {
button_center_view->connect("pressed", callable_mp(this, &CanvasItemEditor::_popup_callback).bind(VIEW_CENTER_TO_SELECTION));
zoom_widget = memnew(EditorZoomWidget);
controls_hb->add_child(zoom_widget);
zoom_widget->set_anchors_and_offsets_preset(Control::PRESET_TOP_LEFT, Control::PRESET_MODE_MINSIZE, 2 * EDSCALE);
zoom_widget->set_shortcut_context(this);
controls_hb->add_child(zoom_widget);
zoom_widget->connect("zoom_changed", callable_mp(this, &CanvasItemEditor::_update_zoom));
panner.instantiate();

2
editor/plugins/tiles/tile_atlas_view.cpp
View File

@ -90,8 +90,6 @@ Size2i TileAtlasView::_compute_alternative_tiles_control_size() {
}
void TileAtlasView::_update_zoom_and_panning(bool p_zoom_on_mouse_pos) {
// Don't allow zoom to go below 1% or above 10000%
zoom_widget->set_zoom(CLAMP(zoom_widget->get_zoom(), 0.01f, 100.f));
float zoom = zoom_widget->get_zoom();
// Compute the minimum sizes.

1
editor/plugins/tiles/tile_data_editors.cpp
View File

@ -931,6 +931,7 @@ GenericTilePolygonEditor::GenericTilePolygonEditor() {
snap_subdivision->connect("value_changed", callable_mp(this, &GenericTilePolygonEditor::_store_snap_options).unbind(1));
editor_zoom_widget = memnew(EditorZoomWidget);
editor_zoom_widget->setup_zoom_limits(0.125, 128.0);
editor_zoom_widget->set_position(Vector2(5, 5));
editor_zoom_widget->connect("zoom_changed", callable_mp(this, &GenericTilePolygonEditor::_zoom_changed).unbind(1));
editor_zoom_widget->set_shortcut_context(this);