Replace database icons with SVG's

Original source of icons is the icon8 library (http://icons8.com/c/flat-color-icons) and Paomedia (https://github.com/paomedia/small-n-flat). All icons used are licensed MIT or CC0; annotated in COPYING.

* Closes #4071

* Increase default size of database icons to 24px and entry preview panel to 48px
* Add shell script to assemble the database icons

* Use QIcon to seamlessly support High DPI displays and pixmap caching
* Add badge support for KeeShare groups and expired entries.
* Guard against use of QPixmap::fromImage without a GUI

* Add SVG minify and improve `make icons`

Co-authored-by: Wolfram Rösler <wolfram@roesler-ac.de>

2 files changed, 123 insertions, 0 deletions

diff --git a/utils/makeicons.sh b/utils/makeappicons.sh
index feb2d25fe..feb2d25fe 100644
--- a/utils/makeicons.sh
+++ b/utils/makeappicons.sh
diff --git a/utils/makedbicons.sh b/utils/makedbicons.sh
new file mode 100644
index 000000000..2e49b9110
--- /dev/null
+++ b/utils/makedbicons.sh
@@ -0,0 +1,123 @@
+#!/bin/bash
+# Assemble database icons from the icons8 collection
+# by Wolfram Rösler 2020-04-30
+
+NC='\033[0m'
+RED='\033[0;31m'
+YELLOW='\033[0;33m'
+
+# Check parameters
+if [[ $# != 1 ]];then
+    echo "Usage: $0 ICONS8"
+    echo "ICONS8 is the directory containing the Icons8 flat-color-icons repository"
+    echo "(git clone https://github.com/icons8/flat-color-icons)".
+    exit
+fi
+
+# Check source directory
+SRCDIR="$1"
+if [ ! -d "$SRCDIR" ];then
+    echo -e "${RED}icons8 directory doesn't exist: ${SRCDIR}${NC}"
+    exit 1
+fi
+
+# Check destination directory
+DSTDIR=share/icons/database
+if [ ! -d "$DSTDIR" ];then
+    echo -e "${RED}Please invoke this script from the KeePassXC source root directory.${NC}"
+    exit 1
+fi
+
+# Copy one icon from the icons8 collection.
+#
+# Usage: copy I8NAME Cnn
+# I8NAME is the file name (without extender and without
+# the "icon8-" prefix) in the icons8 directory.
+# Cnn is C plus the number of the database icon.
+#
+# Example: copy key C00
+copy() {
+    # The source file is:
+    SRC="${SRCDIR}/svg/${1}.svg"
+    if [ ! -f "$SRC" ];then
+        echo -e "${RED}Cannot find source icon for ${2} (${SRC})${NC}"
+        return
+    fi
+
+    # Copy the source file to the destination, keeping
+    # the source file's extension
+    DST="$DSTDIR/${2}.svg"
+    cp $SRC $DST
+    echo "Copied icon for ${1} to ${DST}"
+}
+
+# Now do the actual work
+#copy key                       C00_Password           # Derivative work from key
+copy globe                      C01_Package_Network
+copy high_priority              C02_MessageBox_Warning
+copy data_protection            C03_Server             # No exact match
+copy survey                     C04_Klipper
+copy businessman                C05_Edu_Languages
+copy services                   C06_KCMDF
+#copy notepad                   C07_Kate               # Provided by paomedia/small-n-flat
+copy external                   C08_Socket
+copy business_contact           C09_Identity
+copy address_book               C10_Kontact
+copy old_time_camera            C11_Camera
+copy entering_heaven_alive      C12_IRKickFlash        # No exact match
+#copy keys-holder               C13_KGPG_Key3          # Derivative work from key
+copy crystal_oscillator         C14_Laptop_Power
+copy video_projector            C15_Scanner
+copy bookmark                   C16_Mozilla_Firebird
+#copy cd                        C17_CDROM_Unmount      # Provided by paomedia/small-n-flat
+#copy monitor                   C18_Display            # Provided by paomedia/small-n-flat
+#copy feedback                  C19_Mail_Generic       # Derivative work from feedback
+copy settings                   C20_Misc
+copy inspection                 C21_KOrganizer
+copy file                       C22_ASCII
+copy template                   C23_Icons
+copy flash_on                   C24_Connect_Established
+copy safe                       C25_Folder_Mail        # No exact match
+#copy save                      C26_FileSave           # Provided by paomedia/small-n-flat
+#copy cloud-storage             C27_NFS_Unmount        # Provided by paomedia/small-n-flat
+copy film_reel                  C28_QuickTime
+#copy                           C29_KGPG_Term          # Derivative work from command_line and key
+#copy command_line              C30_Konsole            # Derivative work from command_line
+copy print                      C31_FilePrint
+copy org_unit                   C32_FSView
+copy cloth                      C33_Run
+copy support                    C34_Configure
+#copy vpn                       C35_KRFB               # Derivative work from paomedia/small-n-flat
+#copy archive-folder            C36_Ark                # Derivative work from folder
+#copy percentage                C37_KPercentage        # Original work
+#copy windows-client            C38_Samba_Unmount      # Derivative work from paomedia/small-n-flat
+copy clock                      C39_History
+copy search                     C40_Mail_Find
+copy landscape                  C41_VectorGfx
+copy electronics                C42_KCMMemory
+copy empty_trash                C43_EditTrash
+#copy                           C44_KNotes             # Provided by paomedia/small-n-flat
+#copy                           C45_Cancel             # Original work
+#copy                           C46_Help               # Original work
+copy package                    C47_KPackage
+copy folder                     C48_Folder
+copy opened_folder              C49_Folder_Blue_Open
+copy data_encryption            C50_Folder_Tar
+#copy unlock                    C51_Decrypted          # Provided by paomedia/small-n-flat
+#copy lock                      C52_Encrypted          # Provided by paomedia/small-n-flat
+#copy                           C53_Apply              # Original work
+#copy pencil                    C54_Signature          # Provided by paomedia/small-n-flat
+copy image_file                 C55_Thumbnail
+copy contacts                   C56_KAddressBook
+copy data_sheet                 C57_View_Text
+copy podium_with_speaker        C58_KPGP               # No exact match
+#copy hammer                    C59_Package_Development # Provided by paomedia/small-n-flat
+copy home                       C60_KFM_Home
+#copy                           C61_Services           # Original work
+copy linux                      C62_Tux
+copy android_os                 C63_Feather
+#copy                           C64_Apple              # Derivative work created from simple-icons apple.svg
+copy wikipedia                  C65_W
+#copy currency_exchange         C66_Money              # Provided by paomedia/small-n-flat
+copy diploma_1                  C67_Certificate
+copy smartphone_tablet          C68_Blackberry