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// +build !windows,!darwin
// 29 july 2014
package ui
import (
"fmt"
"reflect"
"unsafe"
)
// #include "gtk_unix.h"
import "C"
type table struct {
*tablebase
_widget *C.GtkWidget
treeview *C.GtkTreeView
scroller *scroller
model *C.goTableModel
modelgtk *C.GtkTreeModel
pixbufs []*C.GdkPixbuf
// stuff required by GtkTreeModel
nColumns C.gint
old C.gint
types []C.GType
}
var (
attribText = togstr("text")
attribPixbuf = togstr("pixbuf")
)
func finishNewTable(b *tablebase, ty reflect.Type) Table {
widget := C.gtk_tree_view_new()
t := &table{
scroller: newScroller(widget, true, true), // natively scrollable; has a border
tablebase: b,
_widget: widget,
treeview: (*C.GtkTreeView)(unsafe.Pointer(widget)),
}
model := C.newTableModel(unsafe.Pointer(t))
t.model = model
t.modelgtk = (*C.GtkTreeModel)(unsafe.Pointer(model))
C.gtk_tree_view_set_model(t.treeview, t.modelgtk)
for i := 0; i < ty.NumField(); i++ {
cname := togstr(ty.Field(i).Name)
switch ty.Field(i).Type {
case reflect.TypeOf(ImageIndex(0)):
// can't use GDK_TYPE_PIXBUF here because it's a macro that expands to a function and cgo hates that
t.types = append(t.types, C.gdk_pixbuf_get_type())
C.tableAppendColumn(t.treeview, C.gint(i), cname,
C.gtk_cell_renderer_pixbuf_new(), attribPixbuf)
default:
t.types = append(t.types, C.G_TYPE_STRING)
C.tableAppendColumn(t.treeview, C.gint(i), cname,
C.gtk_cell_renderer_text_new(), attribText)
}
freegstr(cname) // free now (not deferred) to conserve memory
}
// and for some GtkTreeModel boilerplate
t.nColumns = C.gint(ty.NumField())
return t
}
func (t *table) Lock() {
t.tablebase.Lock()
d := reflect.Indirect(reflect.ValueOf(t.data))
t.old = C.gint(d.Len())
}
func (t *table) Unlock() {
t.unlock()
// there's a possibility that user actions can happen at this point, before the view is updated
// alas, this is something we have to deal with, because Unlock() can be called from any thread
go func() {
Do(func() {
t.RLock()
defer t.RUnlock()
d := reflect.Indirect(reflect.ValueOf(t.data))
new := C.gint(d.Len())
C.tableUpdate(t.model, t.old, new)
})
}()
}
func (t *table) LoadImageList(i ImageList) {
i.apply(&t.pixbufs)
}
//export goTableModel_get_n_columns
func goTableModel_get_n_columns(model *C.GtkTreeModel) C.gint {
tm := (*C.goTableModel)(unsafe.Pointer(model))
t := (*table)(tm.gotable)
return t.nColumns
}
//export goTableModel_get_column_type
func goTableModel_get_column_type(model *C.GtkTreeModel, column C.gint) C.GType {
tm := (*C.goTableModel)(unsafe.Pointer(model))
t := (*table)(tm.gotable)
return t.types[column]
}
//export goTableModel_do_get_value
func goTableModel_do_get_value(data unsafe.Pointer, row C.gint, col C.gint, value *C.GValue) {
t := (*table)(data)
t.RLock()
defer t.RUnlock()
d := reflect.Indirect(reflect.ValueOf(t.data))
datum := d.Index(int(row)).Field(int(col))
switch d := datum.Interface().(type) {
case ImageIndex:
C.g_value_init(value, C.gdk_pixbuf_get_type())
C.g_value_set_object(value, C.gpointer(unsafe.Pointer(t.pixbufs[d])))
default:
s := fmt.Sprintf("%v", datum)
str := togstr(s)
defer freegstr(str)
C.g_value_init(value, C.G_TYPE_STRING)
C.g_value_set_string(value, str)
}
}
//export goTableModel_getRowCount
func goTableModel_getRowCount(data unsafe.Pointer) C.gint {
t := (*table)(data)
t.RLock()
defer t.RUnlock()
d := reflect.Indirect(reflect.ValueOf(t.data))
return C.gint(d.Len())
}
func (t *table) widget() *C.GtkWidget {
return t._widget
}
func (t *table) setParent(p *controlParent) {
t.scroller.setParent(p)
}
func (t *table) allocate(x int, y int, width int, height int, d *sizing) []*allocation {
return baseallocate(t, x, y, width, height, d)
}
func (t *table) preferredSize(d *sizing) (width, height int) {
return basepreferredSize(t, d)
}
func (t *table) commitResize(c *allocation, d *sizing) {
t.scroller.commitResize(c, d)
}
func (t *table) getAuxResizeInfo(d *sizing) {
// a Label to the left of a Table should be vertically aligned to the top
d.shouldVAlignTop = true
}
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