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Merge pull request #2449 from leezh/label-valign-fix

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reworked Label class
This commit is contained in:
Juan Linietsky 2015-09-25 11:29:49 -03:00
commit 52eebdc001
3 changed files with 246 additions and 134 deletions
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63
doc/base/classes.xml
View file

@ -14976,26 +14976,28 @@
<argument index="0" name="align" type="int">
</argument>
<description>
Set the alignmend mode to any of the ALIGN_* enumeration values.
Sets the alignment mode to any of the ALIGN_* enumeration values.
</description>
</method>
<method name="get_align" qualifiers="const">
<return type="int">
</return>
<description>
Return the alignmend mode (any of the ALIGN_* enumeration values).
Return the alignment mode (any of the ALIGN_* enumeration values).
</description>
</method>
<method name="set_valign">
<argument index="0" name="valign" type="int">
</argument>
<description>
Sets the vertical alignment mode to any of the VALIGN_* enumeration values.
</description>
</method>
<method name="get_valign" qualifiers="const">
<return type="int">
</return>
<description>
Return the vertical alignment mode (any of the VALIGN_* enumeration values).
</description>
</method>
<method name="set_text">
@ -15026,16 +15028,32 @@
Return the state of the [i]autowrap[/i] mode (see [method set_autowrap]).
</description>
</method>
<method name="set_clip_text">
<argument index="0" name="enable" type="bool">
</argument>
<description>
Cuts off the rest of the text if it is too wide.
</description>
</method>
<method name="is_clipping_text" qualifiers="const">
<return type="bool">
</return>
<description>
Return true if text would be cut off if it is too wide.
</description>
</method>
<method name="set_uppercase">
<argument index="0" name="enable" type="bool">
</argument>
<description>
Display text in all capitals.
</description>
</method>
<method name="is_uppercase" qualifiers="const">
<return type="bool">
</return>
<description>
Return true if text is displayed in all capitals.
</description>
</method>
<method name="get_line_height" qualifiers="const">
@ -15056,24 +15074,63 @@
<return type="int">
</return>
<description>
Return the total length of the text.
</description>
</method>
<method name="set_visible_characters">
<argument index="0" name="arg0" type="int">
<argument index="0" name="amount" type="int">
</argument>
<description>
Restricts the number of characters to display. Set to -1 to disable.
</description>
</method>
<method name="get_visible_characters" qualifiers="const">
<return type="int">
</return>
<description>
Return the restricted number of characters to display. Returns -1 if unrestricted.
</description>
</method>
<method name="set_percent_visible">
<argument index="0" name="percent_visible" type="float">
</argument>
<description>
Restricts the number of characters to display (as a percentage of the total text).
</description>
</method>
<method name="get_percent_visible" qualifiers="const">
<return type="float">
</return>
<description>
Return the restricted number of characters to display (as a percentage of the total text).
</description>
</method>
<method name="set_max_lines_visible">
<argument index="0" name="lines_visible" type="int">
</argument>
<description>
Restricts the number of lines to display. Set to -1 to disable.
</description>
</method>
<method name="get_max_lines_visible" qualifiers="const">
<return type="int">
</return>
<description>
Return the restricted number of lines to display. Returns -1 if unrestricted.
</description>
</method>
<method name="set_lines_skipped">
<argument index="0" name="lines_skipped" type="int">
</argument>
<description>
Sets the number of lines to skip before displaying. Useful for scrolling text.
</description>
</method>
<method name="get_lines_skipped" qualifiers="const">
<return type="int">
</return>
<description>
Return the the number of lines to skipped before displaying.
</description>
</method>
</methods>

277
scene/gui/label.cpp
View file

@ -33,15 +33,15 @@
void Label::set_autowrap(bool p_autowrap) {
autowrap=p_autowrap;
word_cache_dirty=true;
minimum_size_changed();
update();
}
bool Label::has_autowrap() const {
return autowrap;
}
@ -51,6 +51,7 @@ void Label::set_uppercase(bool p_uppercase) {
uppercase=p_uppercase;
word_cache_dirty=true;
minimum_size_changed();
update();
}
bool Label::is_uppercase() const {
@ -66,19 +67,18 @@ int Label::get_line_height() const {
void Label::_notification(int p_what) {
if (p_what==NOTIFICATION_DRAW) {
if (clip && !autowrap)
VisualServer::get_singleton()->canvas_item_set_clip(get_canvas_item(),true);
if (p_what==NOTIFICATION_DRAW) {
if (clip || autowrap)
VisualServer::get_singleton()->canvas_item_set_clip(get_canvas_item(),true);
if (word_cache_dirty)
regenerate_word_cache();
RID ci = get_canvas_item();
Size2 string_size;
Size2 size=get_size();
@ -91,38 +91,43 @@ void Label::_notification(int p_what) {
VisualServer::get_singleton()->canvas_item_set_distance_field_mode(get_canvas_item(),font.is_valid() && font->is_distance_field_hint());
int font_h = font->get_height();
int line_from=(int)get_val(); // + p_exposed.pos.y / font_h;
int lines_visible = size.y/font_h;
int line_to=(int)get_val() + lines_visible; //p_exposed.pos.y+p_exposed.size.height / font_h;
int space_w=font->get_char_size(' ').width;
int lines_total = get_max();
int chars_total=0;
int vbegin=0,vsep=0;
if (lines_total && lines_total < lines_visible) {
if (lines_visible > line_count) {
lines_visible = line_count;
}
if (max_lines_visible >= 0 && lines_visible > max_lines_visible) {
lines_visible = max_lines_visible;
}
if (lines_visible > 0) {
switch(valign) {
case VALIGN_TOP: {
//nothing
} break;
case VALIGN_CENTER: {
vbegin=(lines_visible-lines_total) * font_h / 2;
vbegin=(size.y - lines_visible * font_h) / 2;
vsep=0;
} break;
case VALIGN_BOTTOM: {
vbegin=(lines_visible-lines_total) * font_h;
vbegin=size.y - lines_visible * font_h;
vsep=0;
} break;
case VALIGN_FILL: {
vbegin=0;
if (lines_total>1) {
vsep=(lines_visible-lines_total) * font_h / (lines_total-1);
if (lines_visible>1) {
vsep=(size.y - lines_visible * font_h) / (lines_visible - 1);
} else {
vsep=0;
}
@ -130,20 +135,21 @@ void Label::_notification(int p_what) {
} break;
}
}
WordCache *wc = word_cache;
if (!wc)
return;
int c = 0;
int line=0;
int line_to=lines_skipped + (lines_visible>0?lines_visible:1);
while(wc) {
/* handle lines not meant to be drawn quickly */
if (line>line_to)
if (line>=line_to)
break;
if (line<line_from) {
if (line<lines_skipped) {
while (wc && wc->char_pos>=0)
wc=wc->next;
if (wc)
@ -151,36 +157,36 @@ void Label::_notification(int p_what) {
line++;
continue;
}
/* handle lines normally */
if (wc->char_pos<0) {
//empty line
wc=wc->next;
line++;
continue;
}
WordCache *from=wc;
WordCache *to=wc;
int taken=0;
int spaces=0;
while(to && to->char_pos>=0) {
taken+=to->pixel_width;
if (to!=from && to->space_count) {
spaces+=to->space_count;
}
to=to->next;
}
bool can_fill = to && to->char_pos==WordCache::CHAR_WRAPLINE;
float x_ofs=0;
switch (align) {
case ALIGN_FILL:
case ALIGN_LEFT: {
@ -198,16 +204,16 @@ void Label::_notification(int p_what) {
} break;
}
int y_ofs=(line-(int)get_val())*font_h + font->get_ascent();
int y_ofs=(line-lines_skipped)*font_h + font->get_ascent();
y_ofs+=vbegin + line*vsep;
while(from!=to) {
// draw a word
int pos = from->char_pos;
if (from->char_pos<0) {
ERR_PRINT("BUG");
return;
}
@ -221,15 +227,15 @@ void Label::_notification(int p_what) {
}
if (font_color_shadow.a>0) {
int chars_total_shadow = chars_total; //save chars drawn
float x_ofs_shadow=x_ofs;
for (int i=0;i<from->word_len;i++) {
if (visible_chars < 0 || chars_total_shadow<visible_chars) {
CharType c = text[i+pos];
CharType n = text[i+pos+1];
@ -249,7 +255,7 @@ void Label::_notification(int p_what) {
}
}
}
for (int i=0;i<from->word_len;i++) {
@ -268,73 +274,73 @@ void Label::_notification(int p_what) {
}
from=from->next;
}
wc=to?to->next:0;
line++;
}
}
}
if (p_what==NOTIFICATION_THEME_CHANGED) {
word_cache_dirty=true;
update();
}
if (p_what==NOTIFICATION_RESIZED) {
word_cache_dirty=true;
}
}
Size2 Label::get_minimum_size() const {
if (autowrap)
return Size2(1,1);
else {
// don't want to mutable everything
if(word_cache_dirty)
if(word_cache_dirty)
const_cast<Label*>(this)->regenerate_word_cache();
Size2 ms=minsize;
if (clip)
ms.width=1;
return ms;
}
}
}
int Label::get_longest_line_width() const {
Ref<Font> font = get_font("font");
int max_line_width=0;
int line_width=0;
for (int i=0;i<text.size()+1;i++) {
CharType current=i<text.length()?text[i]:' '; //always a space at the end, so the algo works
for (int i=0;i<text.size();i++) {
CharType current=text[i];
if (uppercase)
current=String::char_uppercase(current);
if (current<32) {
if (current=='\n') {
if (line_width>max_line_width)
max_line_width=line_width;
line_width=0;
}
} else {
int char_width=font->get_char_size(current).width;
line_width+=char_width;
line_width+=char_width;
}
}
if (line_width>max_line_width)
max_line_width=line_width;
return max_line_width;
}
@ -349,15 +355,15 @@ int Label::get_line_count() const {
}
void Label::regenerate_word_cache() {
while (word_cache) {
WordCache *current=word_cache;
word_cache=current->next;
memdelete( current );
}
int width=autowrap?get_size().width:get_longest_line_width();
Ref<Font> font = get_font("font");
@ -368,11 +374,11 @@ void Label::regenerate_word_cache() {
int space_width=font->get_char_size(' ').width;
line_count=1;
total_char_cache=0;
WordCache *last=NULL;
for (int i=0;i<text.size()+1;i++) {
CharType current=i<text.length()?text[i]:' '; //always a space at the end, so the algo works
if (uppercase)
@ -429,12 +435,12 @@ void Label::regenerate_word_cache() {
if (current_word_size==0) {
word_pos=i;
}
char_width=font->get_char_size(current).width;
current_word_size+=char_width;
line_width+=char_width;
total_char_cache++;
}
if ((autowrap && (line_width >= width) && ((last && last->char_pos >= 0) || separatable)) || insert_newline) {
@ -474,29 +480,22 @@ void Label::regenerate_word_cache() {
space_count=0;
}
}
//total_char_cache -= line_count + 1; // do not count new lines (including the first one)
if (!autowrap) {
minsize.width=width;
minsize.height=font->get_height()*line_count;
set_page( line_count );
} else {
set_page( get_size().height / font->get_height() );
if (max_lines_visible > 0 && line_count > max_lines_visible) {
minsize.height=font->get_height()*max_lines_visible;
} else {
minsize.height=font->get_height()*line_count;
}
}
set_max(line_count);
word_cache_dirty=false;
}
void Label::set_align(Align p_align) {
ERR_FAIL_INDEX(p_align,4);
@ -505,7 +504,7 @@ void Label::set_align(Align p_align) {
}
Label::Align Label::get_align() const{
return align;
}
@ -522,24 +521,23 @@ Label::VAlign Label::get_valign() const{
}
void Label::set_text(const String& p_string) {
String str = XL_MESSAGE(p_string);
if (text==str)
return;
text=str;
word_cache_dirty=true;
if (percent_visible<1)
visible_chars=get_total_character_count()*percent_visible;
update();
if (!autowrap)
minimum_size_changed();
minimum_size_changed();
}
void Label::set_clip_text(bool p_clip) {
if (clip==p_clip)
return;
clip=p_clip;
update();
minimum_size_changed();
@ -551,23 +549,39 @@ bool Label::is_clipping_text() const {
}
String Label::get_text() const {
return text;
}
void Label::set_visible_characters(int p_amount) {
visible_chars=p_amount;
if (get_total_character_count() > 0) {
percent_visible=(float)p_amount/(float)total_char_cache;
}
update();
}
int Label::get_visible_characters() const {
return visible_chars;
}
void Label::set_percent_visible(float p_percent) {
if (p_percent<0)
set_visible_characters(-1);
else
set_visible_characters(get_total_character_count()*p_percent);
percent_visible=p_percent;
if (p_percent<0 || p_percent>=1) {
visible_chars=-1;
percent_visible=1;
} else {
visible_chars=get_total_character_count()*p_percent;
percent_visible=p_percent;
}
update();
}
float Label::get_percent_visible() const{
@ -575,6 +589,27 @@ float Label::get_percent_visible() const{
return percent_visible;
}
void Label::set_lines_skipped(int p_lines) {
lines_skipped=p_lines;
update();
}
int Label::get_lines_skipped() const{
return lines_skipped;
}
void Label::set_max_lines_visible(int p_lines) {
max_lines_visible=p_lines;
update();
}
int Label::get_max_lines_visible() const{
return max_lines_visible;
}
int Label::get_total_character_count() const {
@ -585,7 +620,7 @@ int Label::get_total_character_count() const {
}
void Label::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_align","align"),&Label::set_align);
ObjectTypeDB::bind_method(_MD("get_align"),&Label::get_align);
ObjectTypeDB::bind_method(_MD("set_valign","valign"),&Label::set_valign);
@ -594,14 +629,21 @@ void Label::_bind_methods() {
ObjectTypeDB::bind_method(_MD("get_text"),&Label::get_text);
ObjectTypeDB::bind_method(_MD("set_autowrap","enable"),&Label::set_autowrap);
ObjectTypeDB::bind_method(_MD("has_autowrap"),&Label::has_autowrap);
ObjectTypeDB::bind_method(_MD("set_clip_text","enable"),&Label::set_clip_text);
ObjectTypeDB::bind_method(_MD("is_clipping_text"),&Label::is_clipping_text);
ObjectTypeDB::bind_method(_MD("set_uppercase","enable"),&Label::set_uppercase);
ObjectTypeDB::bind_method(_MD("is_uppercase"),&Label::is_uppercase);
ObjectTypeDB::bind_method(_MD("get_line_height"),&Label::get_line_height);
ObjectTypeDB::bind_method(_MD("get_line_count"),&Label::get_line_count);
ObjectTypeDB::bind_method(_MD("get_total_character_count"),&Label::get_total_character_count);
ObjectTypeDB::bind_method(_MD("set_visible_characters"),&Label::set_visible_characters);
ObjectTypeDB::bind_method(_MD("set_visible_characters","amount"),&Label::set_visible_characters);
ObjectTypeDB::bind_method(_MD("get_visible_characters"),&Label::get_visible_characters);
ObjectTypeDB::bind_method(_MD("set_percent_visible","percent_visible"),&Label::set_percent_visible);
ObjectTypeDB::bind_method(_MD("get_percent_visible"),&Label::get_percent_visible);
ObjectTypeDB::bind_method(_MD("set_lines_skipped","lines_skipped"),&Label::set_lines_skipped);
ObjectTypeDB::bind_method(_MD("get_lines_skipped"),&Label::get_lines_skipped);
ObjectTypeDB::bind_method(_MD("set_max_lines_visible","lines_visible"),&Label::set_max_lines_visible);
ObjectTypeDB::bind_method(_MD("get_max_lines_visible"),&Label::get_max_lines_visible);
BIND_CONSTANT( ALIGN_LEFT );
BIND_CONSTANT( ALIGN_CENTER );
@ -617,18 +659,21 @@ void Label::_bind_methods() {
ADD_PROPERTYNZ( PropertyInfo( Variant::INT, "align", PROPERTY_HINT_ENUM,"Left,Center,Right,Fill" ),_SCS("set_align"),_SCS("get_align") );
ADD_PROPERTYNZ( PropertyInfo( Variant::INT, "valign", PROPERTY_HINT_ENUM,"Top,Center,Bottom,Fill" ),_SCS("set_valign"),_SCS("get_valign") );
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "autowrap"),_SCS("set_autowrap"),_SCS("has_autowrap") );
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "clip_text"),_SCS("set_clip_text"),_SCS("is_clipping_text") );
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "uppercase"),_SCS("set_uppercase"),_SCS("is_uppercase") );
ADD_PROPERTY( PropertyInfo( Variant::REAL, "percent_visible", PROPERTY_HINT_RANGE,"0,1,0.001"),_SCS("set_percent_visible"),_SCS("get_percent_visible") );
ADD_PROPERTY( PropertyInfo( Variant::INT, "lines_skipped", PROPERTY_HINT_RANGE,"0,999,1"),_SCS("set_lines_skipped"),_SCS("get_lines_skipped") );
ADD_PROPERTY( PropertyInfo( Variant::INT, "max_lines_visible", PROPERTY_HINT_RANGE,"-1,999,1"),_SCS("set_max_lines_visible"),_SCS("get_max_lines_visible") );
}
Label::Label(const String &p_text) {
align=ALIGN_LEFT;
valign=VALIGN_TOP;
text="";
word_cache=NULL;
word_cache_dirty=true;
word_cache_dirty=true;
autowrap=false;
line_count=0;
set_v_size_flags(0);
@ -636,20 +681,22 @@ Label::Label(const String &p_text) {
set_ignore_mouse(true);
total_char_cache=0;
visible_chars=-1;
percent_visible=-1;
percent_visible=1;
lines_skipped=0;
max_lines_visible=-1;
set_text(p_text);
uppercase=false;
}
Label::~Label() {
while (word_cache) {
WordCache *current=word_cache;
word_cache=current->next;
memdelete( current );
}
}
}

40
scene/gui/label.h
View file

@ -29,17 +29,17 @@
#ifndef LABEL_H
#define LABEL_H
#include "scene/gui/range.h"
#include "scene/gui/control.h"
/**
@author Juan Linietsky <reduzio@gmail.com>
*/
class Label : public Range {
OBJ_TYPE( Label, Range );
public:
class Label : public Control {
OBJ_TYPE( Label, Control );
public:
enum Align {
ALIGN_LEFT,
ALIGN_CENTER,
ALIGN_RIGHT,
@ -63,11 +63,11 @@ private:
Size2 minsize;
int line_count;
bool uppercase;
int get_longest_line_width() const;
struct WordCache {
enum {
CHAR_NEWLINE=-1,
CHAR_WRAPLINE=-2
@ -78,23 +78,25 @@ private:
int space_count;
WordCache *next;
WordCache() { char_pos=0; word_len=0; pixel_width=0; next=0; space_count=0;}
};
};
bool word_cache_dirty;
void regenerate_word_cache();
float percent_visible;
WordCache *word_cache;
int total_char_cache;
int visible_chars;
protected:
int lines_skipped;
int max_lines_visible;
protected:
void _notification(int p_what);
static void _bind_methods();
// bind helpers
public:
virtual Size2 get_minimum_size() const;
void set_align(Align p_align);
@ -105,7 +107,7 @@ public:
void set_text(const String& p_string);
String get_text() const;
void set_autowrap(bool p_autowrap);
bool has_autowrap() const;
@ -113,6 +115,7 @@ public:
bool is_uppercase() const;
void set_visible_characters(int p_amount);
int get_visible_characters() const;
int get_total_character_count() const;
void set_clip_text(bool p_clip);
@ -121,6 +124,11 @@ public:
void set_percent_visible(float p_percent);
float get_percent_visible() const;
void set_lines_skipped(int p_lines);
int get_lines_skipped() const;
void set_max_lines_visible(int p_lines);
int get_max_lines_visible() const;
int get_line_height() const;
int get_line_count() const;