Cleanup APPPrinterRenderer by introducing APPPrinterStyle

plugin.xml

@@ -78,6 +78,9 @@
         <header-file src="src/ios/APPPrinterRenderer.h" />
         <source-file src="src/ios/APPPrinterRenderer.m" />
 
+        <header-file src="src/ios/APPPrinterStyle.h" />
+        <source-file src="src/ios/APPPrinterStyle.m" />
+
         <header-file src="src/ios/APPPrinterUnit.h" />
         <source-file src="src/ios/APPPrinterUnit.m" />
 

src/ios/APPPrinterRenderer.m

@@ -21,6 +21,7 @@
 
 #include "APPPrinterLayout.h"
 #include "APPPrinterRenderer.h"
+#include "APPPrinterStyle.h"
 #include "APPPrinterUnit.h"
 
 @interface APPPrinterRenderer ()
@@ -117,7 +118,6 @@
                           inRect:(CGRect)rect
 {
     NSString *label = spec[@"text"];
-    NSString *align = spec[@"align"];
     BOOL showIndex  = [spec[@"showPageIndex"] boolValue];
 
     if (showIndex)
@@ -129,82 +129,10 @@
     if ([self strIsNullOrEmpty:label])
         return;
 
-    NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle]
-                                      mutableCopy];
+    APPPrinterStyle *style = [[APPPrinterStyle alloc]
+                              initWithDictionary:spec];
 
-    if ([align isEqualToString:@"left"])
-    {
-        style.alignment = NSTextAlignmentLeft;
-    }
-    else if ([align isEqualToString:@"right"])
-    {
-        style.alignment = NSTextAlignmentRight;
-    }
-    else if ([align isEqualToString:@"center"])
-    {
-        style.alignment = NSTextAlignmentCenter;
-    }
-    else if ([align isEqualToString:@"justified"])
-    {
-        style.alignment = NSTextAlignmentJustified;
-    }
-
-    NSString *hex  = spec[@"color"];
-    UIColor *color;
-
-    if ([self strIsNullOrEmpty:hex])
-    {
-        color = UIColor.darkTextColor;
-    }
-    else
-    {
-        if ([hex characterAtIndex:0] == '#')
-        {
-            hex = [hex substringFromIndex:1];
-        }
-
-        color = [self colorFromHexString:hex];
-    }
-
-    if (!color)
-    {
-        color = UIColor.darkTextColor;
-    }
-
-    double size = [spec[@"size"] doubleValue];
-
-    if (size <= 0.0)
-    {
-        size = UIFont.smallSystemFontSize;
-    }
-
-    UIFont *font = [UIFont fontWithName:spec[@"font"] size:size];
-
-    if (!font)
-    {
-        font = [UIFont systemFontOfSize:size];
-    }
-
-    UIFontDescriptorSymbolicTraits traits = 0;
-
-    if ([spec[@"bold"] boolValue])
-    {
-        traits = traits | UIFontDescriptorTraitBold;
-    }
-
-    if ([spec[@"italic"] boolValue])
-    {
-        traits = traits | UIFontDescriptorTraitItalic;
-    }
-
-    font = [UIFont fontWithDescriptor:[font.fontDescriptor fontDescriptorWithSymbolicTraits:traits]
-                                 size:size];
-
-    NSDictionary *attrs = @{ NSFontAttributeName: font,
-                             NSParagraphStyleAttributeName: style,
-                             NSForegroundColorAttributeName: color };
-
-    [label drawInRect:rect withAttributes:attrs];
+    [label drawInRect:rect withAttributes:style.attributes];
 }
 
 - (BOOL) strIsNullOrEmpty:(NSString *)string
@@ -212,20 +140,4 @@
     return [string isEqual:[NSNull null]] || string.length == 0;
 }
 
-- (UIColor *)colorFromHexString:(NSString *)hex
-{
-    unsigned rgb = 0;
-
-    NSScanner *scanner = [NSScanner scannerWithString:hex];
-
-    [scanner setCharactersToBeSkipped:
-     [NSCharacterSet characterSetWithCharactersInString:@"#"]];
-
-    [scanner scanHexInt:&rgb];
-
-    return [UIColor colorWithRed:((rgb & 0xFF0000) >> 16)/255.0
-                           green:((rgb & 0xFF00) >> 8)/255.0
-                            blue:(rgb & 0xFF)/255.0 alpha:1.0];
-}
-
 @end

src/ios/APPPrinterStyle.h

@@ -0,0 +1,35 @@
+
+/*
+ Copyright 2013 appPlant GmbH
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+ */
+
+@interface APPPrinterStyle : NSObject
+
+- (instancetype) initWithDictionary:(NSDictionary *)spec;
+
+- (UIFont *)font;
+
+- (UIColor *)color;
+
+- (NSTextAlignment) textAlignment;
+
+- (NSDictionary<NSAttributedStringKey, id> *)attributes;
+
+@end

src/ios/APPPrinterStyle.m

@@ -0,0 +1,169 @@
+
+/*
+ Copyright 2013 appPlant GmbH
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+ */
+
+#include "APPPrinterStyle.h"
+
+@interface APPPrinterStyle ()
+
+@property (nonatomic, retain) NSDictionary *settings;
+
+@end
+
+@implementation APPPrinterStyle
+
+#pragma mark -
+#pragma mark Public
+
+- (instancetype) initWithDictionary:(NSDictionary *)settings
+{
+    self = [self init];
+
+    _settings = settings;
+
+    return self;
+}
+
+- (NSDictionary<NSAttributedStringKey, id> *)attributes
+{
+    NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle]
+                                      mutableCopy];
+
+    style.alignment = self.textAlignment;
+
+    return @{ NSFontAttributeName: self.font,
+              NSParagraphStyleAttributeName: style,
+              NSForegroundColorAttributeName: self.color };
+}
+
+- (UIFont *)font
+{
+    double size = [_settings[@"size"] doubleValue];
+
+    if (size <= 0.0)
+    {
+        size = UIFont.smallSystemFontSize;
+    }
+
+    UIFont *font = [UIFont fontWithName:_settings[@"font"] size:size];
+
+    if (!font)
+    {
+        font = [UIFont systemFontOfSize:size];
+    }
+
+    UIFontDescriptorSymbolicTraits traits = 0;
+
+    if ([_settings[@"bold"] boolValue])
+    {
+        traits = traits | UIFontDescriptorTraitBold;
+    }
+
+    if ([_settings[@"italic"] boolValue])
+    {
+        traits = traits | UIFontDescriptorTraitItalic;
+    }
+
+    UIFontDescriptor *descriptor = [font.fontDescriptor
+                                    fontDescriptorWithSymbolicTraits:traits];
+
+    return [UIFont fontWithDescriptor:descriptor size:size];
+}
+
+- (UIColor *)color
+{
+    NSString *hex  = _settings[@"color"];
+    UIColor *color;
+
+    if ([self strIsNullOrEmpty:hex])
+    {
+        color = UIColor.darkTextColor;
+    }
+    else
+    {
+        if ([hex characterAtIndex:0] == '#')
+        {
+            hex = [hex substringFromIndex:1];
+        }
+
+        color = [self colorFromHexString:hex];
+    }
+
+    if (!color)
+    {
+        color = UIColor.darkTextColor;
+    }
+
+    return color;
+}
+
+- (NSTextAlignment) textAlignment
+{
+    NSString *align = _settings[@"align"];
+
+    if ([align isEqualToString:@"left"])
+    {
+        return NSTextAlignmentLeft;
+    }
+
+    if ([align isEqualToString:@"right"])
+    {
+        return NSTextAlignmentRight;
+    }
+
+    if ([align isEqualToString:@"center"])
+    {
+        return NSTextAlignmentCenter;
+    }
+
+    if ([align isEqualToString:@"justified"])
+    {
+        return NSTextAlignmentJustified;
+    }
+
+    return NSTextAlignmentNatural;
+}
+
+#pragma mark -
+#pragma mark Private
+
+- (BOOL) strIsNullOrEmpty:(NSString *)string
+{
+    return [string isEqual:[NSNull null]] || string.length == 0;
+}
+
+- (UIColor *)colorFromHexString:(NSString *)hex
+{
+    unsigned rgb = 0;
+
+    NSScanner *scanner = [NSScanner scannerWithString:hex];
+
+    [scanner setCharactersToBeSkipped:
+     [NSCharacterSet characterSetWithCharactersInString:@"#"]];
+
+    [scanner scanHexInt:&rgb];
+
+    return [UIColor colorWithRed:((rgb & 0xFF0000) >> 16)/255.0
+                           green:((rgb & 0xFF00) >> 8)/255.0
+                            blue:(rgb & 0xFF)/255.0 alpha:1.0];
+}
+
+@end