some more useful macros

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3950 212acab6-be3b-0410-9dea-997c60f758d6

Include/Colors.nsh

@@ -1,7 +1,16 @@
+!ifndef COLORS_NSH
+!define COLORS_NSH
+
+!verbose push
+!verbose 3
+
+# Squad
 # Rob Segal
-# Lobo Lunar
+# Joel
 # Yathosho
 
+
+# Predefined HTML Hex colors
 !define WHITE "FFFFFF"
 !define BLACK "000000"
 !define YELLOW "FFFF00"
@@ -11,8 +20,56 @@
 !define MAGENTA "FF00FF"
 !define CYAN "00FFFF"
 
+# Function to convert red , green and blue integer values to HTML Hex format
+!define RGB '!insertmacro rgb2hex'
+
+# Function to convert red, green and blue integer values to Hexadecimal (0xRRGGBB) format
+!define HEX '!insertmacro rgb2hex2'
+
+# Function to get the r value from a RGB number
+!define GetRvalue '!insertmacro redvalue'
+
+# Function to get the g value from a RGB number
+!define GetGvalue '!insertmacro greenvalue'
+
+# Function to get the b value from a RGB number
+!define GetBvalue '!insertmacro bluevalue'
+
+# Function to get the r value from a Hex number
+!define GetRvalueX '!insertmacro bluevalue'
+
+# Function to get the g value from a Hex number
+!define GetGvalueX '!insertmacro greenvalue'
+
+# Function to get the r value from a HEX number
+!define GetBvalueX '!insertmacro redvalue'
+
 !macro rgb2hex output R G B
 IntFmt "${output}" "%02X" "${R}"
 IntFmt "${output}" "${output}%02X" "${G}"
 IntFmt "${output}" "${output}%02X" "${B}"
-!macroend
+!macroend
+
+!macro rgb2hex2 output R G B
+IntFmt "${output}" "%02X" "${B}"
+IntFmt "${output}" "${output}%02X" "${G}"
+IntFmt "${output}" "${output}%02X" "${R}"
+!macroend
+
+!macro redvalue output hexval
+StrCpy ${output} ${hexval} 2 0
+IntFmt "${output}" "%02i" "0x${output}"
+!macroend
+
+!macro greenvalue output hexval
+StrCpy ${output} ${hexval} 2 2
+IntFmt "${output}" "%02i" "0x${output}"
+!macroend
+
+!macro bluevalue output hexval
+StrCpy ${output} ${hexval} 2 4
+IntFmt "${output}" "%02i" "0x${output}"
+!macroend
+
+!verbose pop
+!endif