From 9f5d942c65e713661218cefecad56747c6525b5d Mon Sep 17 00:00:00 2001
From: Felix Breidenstein <felix@codemonauts.com>
Date: Thu, 5 Aug 2021 16:50:39 +0200
Subject: [PATCH] Add fontSize as option

---
 README.md | 36 +++++++++++++++++++++++-------------
 main.go   |  9 +++++----
 2 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/README.md b/README.md
index f8f3da3..9f4c694 100644
--- a/README.md
+++ b/README.md
@@ -1,44 +1,54 @@
 Get customized placeholder images for your mockups and website designs :rocket:
 
 ## Features
- * Free
- * Open Source
- * Fast (delivered via a CDN)
- 
+
+- Free
+- Open Source
+- Fast (delivered via a CDN)
+
 ## Usage
+
 The base URL is: `https://nocontent.cloud/img`
 
 To customize the image you will get, prodive one or more of the following options as query string parameters:
 
-|name|description||value|
-|---|---|---|---|
-|x|width of image|optional (default: 200)|number (in pixels, max-width: 4000)|
-|y|height of image|optional (default: 200)|number (in pixels, max-height: 4000)|
-|bg|background color|optional (default: ffffff)|hex-value (3 or 6 character)|
-|fg|text color|optional (default: 333333)|hex-value (3 or 6 character)|
-|label|text on the image|optional (default: 'height' x 'width') | string (max-length: 20)
+| name     | description       |                                        | value                                |
+| -------- | ----------------- | -------------------------------------- | ------------------------------------ |
+| x        | width of image    | optional (default: 200)                | number (in pixels, max-width: 4000)  |
+| y        | height of image   | optional (default: 200)                | number (in pixels, max-height: 4000) |
+| bg       | background color  | optional (default: ffffff)             | hex-value (3 or 6 character)         |
+| fg       | text color        | optional (default: 333333)             | hex-value (3 or 6 character)         |
+| label    | text on the image | optional (default: 'height' x 'width') | string (max-length: 20)              |
+| fontSize | size of the label | optional (default: 30)                 | number                               |
 
 ## Example #1
+
 Without any parameters you will get a small white image with black text and 200x200 px
+
 ```
 https://nocontent.cloud/img
 ```
+
 ![200x200](https://nocontent.cloud/img)
 
 ## Example #2
+
 To get a purple image with the dimensions 600x400, query this address:
+
 ```
 https://nocontent.cloud/img?x=600&y=400&bg=980080
 ```
+
 ![600x400](https://nocontent.cloud/img?x=600&y=400&bg=980080)
 
 ## Example #3
+
 Change the text color to blue and provide a custom text with this URL:
+
 ```
 https://nocontent.cloud/img?label=Hello%20World&fg=0099FF
 ```
-![200x200](https://nocontent.cloud/img?label=Hello%20World&fg=0099FF)
-
 
+![200x200](https://nocontent.cloud/img?label=Hello%20World&fg=0099FF)
 
 :computer: with :heart: by [codemonauts](https://codemonauts.com)
diff --git a/main.go b/main.go
index 8508ae8..b4c78ce 100644
--- a/main.go
+++ b/main.go
@@ -52,7 +52,7 @@ func parseHexColor(s string, fallback color.RGBA) color.RGBA {
 	return c
 }
 
-func addLabel(img *image.RGBA, width int, height int, label string, fg color.RGBA) {
+func addLabel(img *image.RGBA, width int, height int, label string, size int, fg color.RGBA) {
 	// Read the font data.
 	fontBytes, err := ioutil.ReadFile("Inconsolata.ttf")
 	if err != nil {
@@ -66,13 +66,12 @@ func addLabel(img *image.RGBA, width int, height int, label string, fg color.RGB
 	}
 	// Draw the text.
 	h := font.HintingFull
-	size := 30.0
 	dpi := 72.0
 	d := &font.Drawer{
 		Dst: img,
 		Src: image.NewUniform(fg),
 		Face: truetype.NewFace(f, &truetype.Options{
-			Size:    size,
+			Size:    float64(size),
 			DPI:     dpi,
 			Hinting: h,
 		}),
@@ -118,6 +117,8 @@ func Handler(ctx context.Context, request events.APIGatewayProxyRequest) (events
 	y, _ := strconv.Atoi(params["y"])
 	y = validatePixelDimension(y)
 
+	fontSize, _ := strconv.Atoi(params["fontSize"])
+
 	label, _ := params["label"]
 	if label == "" || len(label) > 20 {
 		label = fmt.Sprintf("%d x %d", x, y)
@@ -128,7 +129,7 @@ func Handler(ctx context.Context, request events.APIGatewayProxyRequest) (events
 	fgColor := parseHexColor(params["fg"], color.RGBA{51, 51, 51, 255})
 
 	image := createImage(x, y, bgColor)
-	addLabel(image, x, y, label, fgColor)
+	addLabel(image, x, y, label, fontSize, fgColor)
 
 	buf := new(bytes.Buffer)
 	png.Encode(buf, image)