Add Progress Bar control

Fixes #71

3 files changed, 20 insertions, 0 deletions

diff --git a/src/nigui/private/gtk3/gtk3.nim b/src/nigui/private/gtk3/gtk3.nim
index 61fc8d4..4992f88 100755
--- a/src/nigui/private/gtk3/gtk3.nim
+++ b/src/nigui/private/gtk3/gtk3.nim
@@ -335,6 +335,9 @@ proc gtk_label_set_ellipsize*(label: pointer, mode: cint) {.importc: "gtk_label_
 proc gtk_label_set_xalign*(label: pointer, xalign: cfloat) {.importc: "gtk_label_set_xalign", libgtk3.}
 proc gtk_label_set_yalign*(label: pointer, yalign: cfloat) {.importc: "gtk_label_set_yalign", libgtk3.}
 
+proc gtk_progress_bar_new*(): pointer {.importc: "gtk_progress_bar_new", libgtk3.}
+proc gtk_progress_bar_set_fraction*(pbar: pointer, fraction: cdouble) {.importc: "gtk_progress_bar_set_fraction", libgtk3.}
+
 # proc gtk_box_new*(orientation: GtkOrientation, spacing: cint): pointer {.importc: "gtk_box_new", libgtk3.}
 proc gtk_box_pack_start*(box, child: pointer, expand, fill: cint, padding: cint) {.importc: "gtk_box_pack_start", libgtk3.}
 
diff --git a/src/nigui/private/gtk3/platform_impl.nim b/src/nigui/private/gtk3/platform_impl.nim
index c5a7fdb..8717198 100755
--- a/src/nigui/private/gtk3/platform_impl.nim
+++ b/src/nigui/private/gtk3/platform_impl.nim
@@ -1357,6 +1357,21 @@ method naturalWidth(label: NativeLabel): int {.locks: "unknown".} = label.getTex
 
 
 # ----------------------------------------------------------------------------------------
+#                                      ProgressBar
+# ----------------------------------------------------------------------------------------
+
+proc init(progressBar: NativeProgressBar) =
+  progressBar.fHandle = gtk_progress_bar_new()
+  progressBar.ProgressBar.init()
+  progressBar.height = 8.scaleToDpi # adjust control height to bar height
+
+method `value=`(progressBar: NativeProgressBar, value: float) =
+  procCall progressBar.ProgressBar.`value=`(value)
+  gtk_progress_bar_set_fraction(progressBar.fHandle, value)
+  app.processEvents()
+
+
+# ----------------------------------------------------------------------------------------
 #                                       TextBox
 # ----------------------------------------------------------------------------------------
 
diff --git a/src/nigui/private/gtk3/platform_types2.nim b/src/nigui/private/gtk3/platform_types2.nim
index 12cf897..a9b5674 100755
--- a/src/nigui/private/gtk3/platform_types2.nim
+++ b/src/nigui/private/gtk3/platform_types2.nim
@@ -15,4 +15,6 @@ type
 
   NativeLabel* = ref object of Label
 
+  NativeProgressBar* = ref object of ProgressBar
+
   NativeTextBox* = ref object of TextBox