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fix for css_colored_listview

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This commit is contained in:
Stefan Salewski 2019-09-15 20:40:17 +02:00
commit b3d0a4b0fc
3 changed files with 3143 additions and 15 deletions
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37
examples/gtk3/css_colored_listview.nim
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@ -1,9 +1,8 @@
## gcc -Wall cell_color1.c -o cell_color1 `pkg-config --cflags --libs gtk+-3.0`
## https://discourse.gnome.org/t/gtk-treeview-cell-color-change/1750/4
## C. Eric Cashon
# nim c css_colored_listview.nim
import gintro/[gtk, gobject]
import gintro/[gtk, glib, gobject]
import gintro/gdk except Window # there is a problem with gdk.Window -- we have to investigate!
const # maybe we should use Nim's enum here?
Id = 0
@ -31,6 +30,26 @@ proc toBoolVal(b: bool): Value =
discard init(result, gtype)
setBoolean(result, b)
# we need the following two procs for now -- later we will not use that ugly cast...
proc typeTest(o: gobject.Object; s: string): bool =
let gt = g_type_from_name(s)
return g_type_check_instance_is_a(cast[ptr TypeInstance00](o.impl), gt).toBool
proc listStore(o: gobject.Object): gtk.ListStore =
assert(typeTest(o, "GtkListStore"))
cast[gtk.ListStore](o)
proc updateRow(renderer: CellRendererText; path: cstring; newText: cstring; tree: TreeView) =
var iter: TreeIter
var value: Value
let gtype = typeFromName("gchararray")
discard init(value, gtype)
let store = listStore(tree.getModel())
value.setString(newText)
let treePath = newTreePathFromString(path)
discard store.getIter(iter, treePath)
store.setValue(iter, 1, value)
# we use the old gtk style with init() as is used in the C original -- maybe better use modern app sytle
proc main() =
gtk.init()
@ -41,8 +60,9 @@ proc main() =
window.borderWidth = 20
connect(window, "destroy", bye)
var iter: TreeIter
var h = [typeFromName("guint"), typeFromName("gchararray"), typeFromName("gchararray"), typeFromName("gchararray")]
var store = newListStore(Columns, cast[pointer]( unsafeaddr h)) # this cast is ugly, we should fix it in the bindings soon.
var h = [typeFromName("guint"), typeFromName("gchararray"), typeFromName("gchararray"),
typeFromName("gchararray")]
var store = newListStore(Columns, cast[pointer]( unsafeaddr h)) # cast is ugly, we should fix it in bindings.
let progNames = ["Gedit", "Gimp", "Inkscape", "Firefox", "Calculator", "Devhelp"]
for i, n in progNames:
store.append(iter) # currently we have to use setValue() as there is no varargs proc as in C original
@ -60,6 +80,7 @@ proc main() =
setProperty(renderer1, "editable", toBoolVal(false))
var renderer2 = newCellRendererText()
setProperty(renderer2, "editable", toBoolVal(true))
connect(renderer2, "edited", updateRow, tree)
## Bind the Color column to the "cell-background" property.
var column1 = newTreeViewColumn()
column1.setTitle("ID")
@ -73,16 +94,16 @@ proc main() =
column1.addAttribute(renderer2, "text", Program)
column1.addAttribute(renderer2, "cell-background", Color2)
discard tree.appendColumn(column2)
var grid = newGrid() # grid with only one occupied cell makes not much sense here -- but so we can add more widgets later
var grid = newGrid() # only one occupied cell makes no sense -- but so we can add more widgets later
grid.attach(tree, 0, 0, 1, 1)
window.add(grid)
const cssString = # note: big font selected intentionally
"""treeview{background-color: rgba(0,255,255,1.0); font-size:30pt} treeview:selected{background-color: rgba(255,255,0,1.0);
color: rgba(0,0,255,1.0);}"""
"""treeview{background-color: rgba(0,255,255,1.0); font-size:30pt} treeview:selected{background-color:
rgba(255,255,0,1.0); color: rgba(0,0,255,1.0);}"""
var provider = newCssProvider()
discard provider.loadFromData(cssString)
addProviderForScreen(getDefaultScreen(), provider, STYLE_PROVIDER_PRIORITY_APPLICATION)
window.showAll
gtk.main()
main()
main()