fix: some memory leak bugs (#135)

Author: lc-soft

src/font/fontlibrary.c

@@ -300,8 +300,11 @@ size_t LCUIFont_UpdateWeight( const int *font_ids,
 		}
 	}
 	ids[count] = 0;
-	if( new_font_ids ) {
+	if( new_font_ids && count > 0 ) {
 		*new_font_ids = ids;
+	} else {
+*		new_font_ids = NULL;
+		free( ids );
 	}
 	return count;
 }
@@ -333,8 +336,11 @@ size_t LCUIFont_UpdateStyle( const int *font_ids,
 		}
 	}
 	ids[count] = 0;
-	if( new_font_ids ) {
+	if( new_font_ids && count > 0 ) {
 		*new_font_ids = ids;
+	} else {
+		*new_font_ids = NULL;
+		free( ids );
 	}
 	return count;
 }

src/font/textlayer.c

@@ -321,12 +321,25 @@ static void TextRowList_Destroy( TextRowList list )
 	list->rows = NULL;
 }
 
+static void OnDestroyTextStyle( void *data )
+{
+	TextStyle_Destroy( data );
+	free( data );
+}
+
+static void TextLayer_DestroyStyleCache( LCUI_TextLayer layer )
+{
+	LinkedList_Clear( &layer->style_cache, OnDestroyTextStyle );
+}
+
 /** 销毁TextLayer */
 void TextLayer_Destroy( LCUI_TextLayer layer )
 {
+
 	RectList_Clear( &layer->dirty_rect );
 	TextStyle_Destroy( &layer->text_style );
 	TextRowList_Destroy( &layer->text_rows );
+	TextLayer_DestroyStyleCache( layer );
 	Graph_Free( &layer->graph );
 	free( layer );
 }
@@ -531,8 +544,8 @@ void TextLayer_ClearText( LCUI_TextLayer layer )
 	layer->length = 0;
 	layer->insert_x = 0;
 	layer->insert_y = 0;
+	TextLayer_DestroyStyleCache( layer );
 	TextRowList_Destroy( &layer->text_rows );
-	LinkedList_Clear( &layer->style_cache, (FuncPtr)TextStyle_Destroy );
 	TextRowList_InsertNewRow( &layer->text_rows, 0 );
 	layer->task.redraw_all = TRUE;
 }

src/font/textstyle.c

@@ -55,6 +55,7 @@ void TextStyle_Init( LCUI_TextStyle data )
 	data->has_style = FALSE;
 	data->has_weight = FALSE;
 	data->has_family = FALSE;
+	data->has_pixel_size = FALSE;
 	data->has_back_color = FALSE;
 	data->has_fore_color = FALSE;
 	data->font_ids = NULL;
@@ -273,15 +274,16 @@ LCUI_TextStyle StyleTags_GetTextStyle( LinkedList *tags )
 /** 将指定标签的样式数据从队列中删除，只删除队列尾部第一个匹配的标签 */
 static void StyleTags_Delete( LinkedList *tags, int id )
 {
-	LCUI_TextStyleTag *p;
+	LCUI_TextStyleTag *tag;
 	LinkedListNode *node;
 	DEBUG_MSG( "delete start, total tag: %d\n", total );
 	if( tags->length <= 0 ) {
 		return;
 	}
 	for( LinkedList_Each( node, tags ) ) {
-		p = (LCUI_TextStyleTag*)node->data;
-		if( p->id == id ) {
+		tag = node->data;
+		if( tag->id == id ) {
+			free( tag );
 			LinkedList_DeleteNode( tags, node );
 			break;
 		}
@@ -508,7 +510,7 @@ const wchar_t *StyleTags_GetStart( LinkedList *tags, const wchar_t *str )
 	q = ScanStyleTagData( str, tag );
 	if( q ) {
 		/* 将标签样式数据加入队列 */
-		LinkedList_Append( tags, tag );
+		LinkedList_Insert( tags, 0, tag );
 	} else {
 		free( tag );
 	}

src/gui/widget/textedit.c

@@ -415,7 +415,8 @@ static void TextEdit_OnTask( LCUI_Widget widget )
 	if( edit->tasks[TASK_SET_TEXT] ) {
 		LinkedList blocks;
 		LinkedListNode *node;
-		LCUI_WidgetEventRec ev;
+		LCUI_WidgetEventRec ev = { 0 };
+
 		LinkedList_Init( &blocks );
 		LCUIMutex_Lock( &edit->mutex );
 		LinkedList_Concat( &blocks, &edit->text_blocks );

src/platform/linux/linux_x11display.c

@@ -237,6 +237,8 @@ static void OnDestroySurface( void *data )
 {
 	LCUI_Surface s = data;
 	X11Surface_ClearTasks( s );
+	XDestroyImage( s->ximage );
+	XFreeGC( x11.app->display, s->gc );
 	free( s );
 }