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Add feature to Button to make its icon expand/shrink with the button's size

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This commit is contained in:
Michael Alexsander Silva Dias 2019-08-20 13:41:14 -03:00
parent 208dd5b4a6
commit 9b09daa8c5
4 changed files with 208 additions and 156 deletions
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3
doc/classes/Button.xml
View file

@ -17,6 +17,9 @@
<member name="clip_text" type="bool" setter="set_clip_text" getter="get_clip_text" default="false">
When this property is enabled, text that is too large to fit the button is clipped, when disabled the Button will always be wide enough to hold the text.
</member>
<member name="expand_icon" type="bool" setter="set_expand_icon" getter="is_expand_icon" default="false">
When enabled, the button's icon will expand/shrink to fit the button's size while keeping its aspect.
</member>
<member name="flat" type="bool" setter="set_flat" getter="is_flat" default="false">
Flat buttons don't display decoration.
</member>

339
scene/gui/button.cpp
View file

@ -39,163 +39,192 @@ Size2 Button::get_minimum_size() const {
if (clip_text)
minsize.width = 0;
Ref<Texture> _icon;
if (icon.is_null() && has_icon("icon"))
_icon = Control::get_icon("icon");
else
_icon = icon;
if (!_icon.is_null()) {
minsize.height = MAX(minsize.height, _icon->get_height());
minsize.width += _icon->get_width();
if (xl_text != "")
minsize.width += get_constant("hseparation");
}
return get_stylebox("normal")->get_minimum_size() + minsize;
}
void Button::_set_internal_margin(Margin p_margin, float p_value) {
_internal_margin[p_margin] = p_value;
}
void Button::_notification(int p_what) {
if (p_what == NOTIFICATION_TRANSLATION_CHANGED) {
xl_text = tr(text);
minimum_size_changed();
update();
}
if (p_what == NOTIFICATION_DRAW) {
RID ci = get_canvas_item();
Size2 size = get_size();
Color color;
Color color_icon(1, 1, 1, 1);
Ref<StyleBox> style = get_stylebox("normal");
switch (get_draw_mode()) {
case DRAW_NORMAL: {
style = get_stylebox("normal");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color");
if (has_color("icon_color_normal"))
color_icon = get_color("icon_color_normal");
} break;
case DRAW_HOVER_PRESSED: {
if (has_stylebox("hover_pressed") && has_stylebox_override("hover_pressed")) {
style = get_stylebox("hover_pressed");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
if (has_color("font_color_hover_pressed"))
color = get_color("font_color_hover_pressed");
else
color = get_color("font_color");
if (has_color("icon_color_hover_pressed"))
color_icon = get_color("icon_color_hover_pressed");
break;
}
FALLTHROUGH;
}
case DRAW_PRESSED: {
style = get_stylebox("pressed");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
if (has_color("font_color_pressed"))
color = get_color("font_color_pressed");
else
color = get_color("font_color");
if (has_color("icon_color_pressed"))
color_icon = get_color("icon_color_pressed");
} break;
case DRAW_HOVER: {
style = get_stylebox("hover");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color_hover");
if (has_color("icon_color_hover"))
color_icon = get_color("icon_color_hover");
} break;
case DRAW_DISABLED: {
style = get_stylebox("disabled");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color_disabled");
if (has_color("icon_color_disabled"))
color_icon = get_color("icon_color_disabled");
} break;
}
if (has_focus()) {
Ref<StyleBox> style2 = get_stylebox("focus");
style2->draw(ci, Rect2(Point2(), size));
}
Ref<Font> font = get_font("font");
if (!expand_icon) {
Ref<Texture> _icon;
if (icon.is_null() && has_icon("icon"))
_icon = Control::get_icon("icon");
else
_icon = icon;
Point2 icon_ofs = (!_icon.is_null()) ? Point2(_icon->get_width() + get_constant("hseparation"), 0) : Point2();
int text_clip = size.width - style->get_minimum_size().width - icon_ofs.width;
Point2 text_ofs = (size - style->get_minimum_size() - icon_ofs - font->get_string_size(xl_text) - Point2(_internal_margin[MARGIN_RIGHT] - _internal_margin[MARGIN_LEFT], 0)) / 2.0;
switch (align) {
case ALIGN_LEFT: {
if (_internal_margin[MARGIN_LEFT] > 0) {
text_ofs.x = style->get_margin(MARGIN_LEFT) + icon_ofs.x + _internal_margin[MARGIN_LEFT] + get_constant("hseparation");
} else {
text_ofs.x = style->get_margin(MARGIN_LEFT) + icon_ofs.x;
}
text_ofs.y += style->get_offset().y;
} break;
case ALIGN_CENTER: {
if (text_ofs.x < 0)
text_ofs.x = 0;
text_ofs += icon_ofs;
text_ofs += style->get_offset();
} break;
case ALIGN_RIGHT: {
if (_internal_margin[MARGIN_RIGHT] > 0) {
text_ofs.x = size.x - style->get_margin(MARGIN_RIGHT) - font->get_string_size(xl_text).x - _internal_margin[MARGIN_RIGHT] - get_constant("hseparation");
} else {
text_ofs.x = size.x - style->get_margin(MARGIN_RIGHT) - font->get_string_size(xl_text).x;
}
text_ofs.y += style->get_offset().y;
} break;
}
text_ofs.y += font->get_ascent();
font->draw(ci, text_ofs.floor(), xl_text, color, clip_text ? text_clip : -1);
if (!_icon.is_null()) {
int valign = size.height - style->get_minimum_size().y;
if (is_disabled())
color_icon.a = 0.4;
if (_internal_margin[MARGIN_LEFT] > 0) {
_icon->draw(ci, style->get_offset() + Point2(_internal_margin[MARGIN_LEFT] + get_constant("hseparation"), Math::floor((valign - _icon->get_height()) / 2.0)), color_icon);
} else {
_icon->draw(ci, style->get_offset() + Point2(0, Math::floor((valign - _icon->get_height()) / 2.0)), color_icon);
}
minsize.height = MAX(minsize.height, _icon->get_height());
minsize.width += _icon->get_width();
if (xl_text != "")
minsize.width += get_constant("hseparation");
}
}
return get_stylebox("normal")->get_minimum_size() + minsize;
}
void Button::_set_internal_margin(Margin p_margin, float p_value) {
_internal_margin[p_margin] = p_value;
}
void Button::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_TRANSLATION_CHANGED: {
xl_text = tr(text);
minimum_size_changed();
update();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Size2 size = get_size();
Color color;
Color color_icon(1, 1, 1, 1);
Ref<StyleBox> style = get_stylebox("normal");
switch (get_draw_mode()) {
case DRAW_NORMAL: {
style = get_stylebox("normal");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color");
if (has_color("icon_color_normal"))
color_icon = get_color("icon_color_normal");
} break;
case DRAW_HOVER_PRESSED: {
if (has_stylebox("hover_pressed") && has_stylebox_override("hover_pressed")) {
style = get_stylebox("hover_pressed");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
if (has_color("font_color_hover_pressed"))
color = get_color("font_color_hover_pressed");
else
color = get_color("font_color");
if (has_color("icon_color_hover_pressed"))
color_icon = get_color("icon_color_hover_pressed");
break;
}
FALLTHROUGH;
}
case DRAW_PRESSED: {
style = get_stylebox("pressed");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
if (has_color("font_color_pressed"))
color = get_color("font_color_pressed");
else
color = get_color("font_color");
if (has_color("icon_color_pressed"))
color_icon = get_color("icon_color_pressed");
} break;
case DRAW_HOVER: {
style = get_stylebox("hover");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color_hover");
if (has_color("icon_color_hover"))
color_icon = get_color("icon_color_hover");
} break;
case DRAW_DISABLED: {
style = get_stylebox("disabled");
if (!flat)
style->draw(ci, Rect2(Point2(0, 0), size));
color = get_color("font_color_disabled");
if (has_color("icon_color_disabled"))
color_icon = get_color("icon_color_disabled");
} break;
}
if (has_focus()) {
Ref<StyleBox> style2 = get_stylebox("focus");
style2->draw(ci, Rect2(Point2(), size));
}
Ref<Font> font = get_font("font");
Ref<Texture> _icon;
if (icon.is_null() && has_icon("icon"))
_icon = Control::get_icon("icon");
else
_icon = icon;
Rect2 icon_region = Rect2();
if (!_icon.is_null()) {
int valign = size.height - style->get_minimum_size().y;
if (is_disabled()) {
color_icon.a = 0.4;
}
float icon_ofs_region = 0;
if (_internal_margin[MARGIN_LEFT] > 0) {
icon_ofs_region = _internal_margin[MARGIN_LEFT] + get_constant("hseparation");
}
if (expand_icon) {
Size2 _size = get_size() - style->get_offset() * 2;
_size.width -= get_constant("hseparation") + icon_ofs_region;
if (!clip_text)
_size.width -= get_font("font")->get_string_size(xl_text).width;
float icon_width = icon->get_width() * _size.height / icon->get_height();
float icon_height = _size.height;
if (icon_width > _size.width) {
icon_width = _size.width;
icon_height = icon->get_height() * icon_width / icon->get_width();
}
icon_region = Rect2(style->get_offset() + Point2(icon_ofs_region, (_size.height - icon_height) / 2), Size2(icon_width, icon_height));
} else {
icon_region = Rect2(style->get_offset() + Point2(icon_ofs_region, Math::floor((valign - _icon->get_height()) / 2.0)), icon->get_size());
}
}
Point2 icon_ofs = !_icon.is_null() ? Point2(icon_region.size.width + get_constant("hseparation"), 0) : Point2();
int text_clip = size.width - style->get_minimum_size().width - icon_ofs.width;
Point2 text_ofs = (size - style->get_minimum_size() - icon_ofs - font->get_string_size(xl_text) - Point2(_internal_margin[MARGIN_RIGHT] - _internal_margin[MARGIN_LEFT], 0)) / 2.0;
switch (align) {
case ALIGN_LEFT: {
if (_internal_margin[MARGIN_LEFT] > 0) {
text_ofs.x = style->get_margin(MARGIN_LEFT) + icon_ofs.x + _internal_margin[MARGIN_LEFT] + get_constant("hseparation");
} else {
text_ofs.x = style->get_margin(MARGIN_LEFT) + icon_ofs.x;
}
text_ofs.y += style->get_offset().y;
} break;
case ALIGN_CENTER: {
if (text_ofs.x < 0)
text_ofs.x = 0;
text_ofs += icon_ofs;
text_ofs += style->get_offset();
} break;
case ALIGN_RIGHT: {
if (_internal_margin[MARGIN_RIGHT] > 0) {
text_ofs.x = size.x - style->get_margin(MARGIN_RIGHT) - font->get_string_size(xl_text).x - _internal_margin[MARGIN_RIGHT] - get_constant("hseparation");
} else {
text_ofs.x = size.x - style->get_margin(MARGIN_RIGHT) - font->get_string_size(xl_text).x;
}
text_ofs.y += style->get_offset().y;
} break;
}
text_ofs.y += font->get_ascent();
font->draw(ci, text_ofs.floor(), xl_text, color, clip_text ? text_clip : -1);
if (!_icon.is_null() && icon_region.size.width > 0) {
draw_texture_rect_region(_icon, icon_region, Rect2(Point2(), icon->get_size()), color_icon);
}
} break;
}
}
void Button::set_text(const String &p_text) {
@ -228,6 +257,18 @@ Ref<Texture> Button::get_icon() const {
return icon;
}
void Button::set_expand_icon(bool p_expand_icon) {
expand_icon = p_expand_icon;
update();
minimum_size_changed();
}
bool Button::is_expand_icon() const {
return expand_icon;
}
void Button::set_flat(bool p_flat) {
flat = p_flat;
@ -269,6 +310,8 @@ void Button::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_text"), &Button::get_text);
ClassDB::bind_method(D_METHOD("set_button_icon", "texture"), &Button::set_icon);
ClassDB::bind_method(D_METHOD("get_button_icon"), &Button::get_icon);
ClassDB::bind_method(D_METHOD("set_expand_icon"), &Button::set_expand_icon);
ClassDB::bind_method(D_METHOD("is_expand_icon"), &Button::is_expand_icon);
ClassDB::bind_method(D_METHOD("set_flat", "enabled"), &Button::set_flat);
ClassDB::bind_method(D_METHOD("set_clip_text", "enabled"), &Button::set_clip_text);
ClassDB::bind_method(D_METHOD("get_clip_text"), &Button::get_clip_text);
@ -285,12 +328,14 @@ void Button::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "flat"), "set_flat", "is_flat");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "clip_text"), "set_clip_text", "get_clip_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "align", PROPERTY_HINT_ENUM, "Left,Center,Right"), "set_text_align", "get_text_align");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "expand_icon"), "set_expand_icon", "is_expand_icon");
}
Button::Button(const String &p_text) {
flat = false;
clip_text = false;
expand_icon = false;
set_mouse_filter(MOUSE_FILTER_STOP);
set_text(p_text);
align = ALIGN_CENTER;

6
scene/gui/button.h
View file

@ -49,6 +49,7 @@ private:
String text;
String xl_text;
Ref<Texture> icon;
bool expand_icon;
bool clip_text;
TextAlign align;
float _internal_margin[4];
@ -59,8 +60,6 @@ protected:
static void _bind_methods();
public:
//
virtual Size2 get_minimum_size() const;
void set_text(const String &p_text);
@ -69,6 +68,9 @@ public:
void set_icon(const Ref<Texture> &p_icon);
Ref<Texture> get_icon() const;
void set_expand_icon(bool p_expand_icon);
bool is_expand_icon() const;
void set_flat(bool p_flat);
bool is_flat() const;

16
scene/gui/texture_button.cpp
View file

@ -205,24 +205,26 @@ void TextureButton::_notification(int p_what) {
case STRETCH_KEEP_ASPECT_COVERED: {
size = get_size();
Size2 tex_size = texdraw->get_size();
Size2 scaleSize(size.width / tex_size.width, size.height / tex_size.height);
float scale = scaleSize.width > scaleSize.height ? scaleSize.width : scaleSize.height;
Size2 scaledTexSize = tex_size * scale;
Point2 ofs2 = ((scaledTexSize - size) / scale).abs() / 2.0f;
Size2 scale_size(size.width / tex_size.width, size.height / tex_size.height);
float scale = scale_size.width > scale_size.height ? scale_size.width : scale_size.height;
Size2 scaled_tex_size = tex_size * scale;
Point2 ofs2 = ((scaled_tex_size - size) / scale).abs() / 2.0f;
_texture_region = Rect2(ofs2, size / scale);
} break;
}
}
_position_rect = Rect2(ofs, size);
if (_tile)
if (_tile) {
draw_texture_rect(texdraw, _position_rect, _tile);
else
} else {
draw_texture_rect_region(texdraw, _position_rect, _texture_region);
}
} else {
_position_rect = Rect2();
}
if (has_focus() && focused.is_valid()) {
if (has_focus() && focused.is_valid()) {
draw_texture_rect(focused, _position_rect, false);
};
} break;