First Commit

absolute_layout.go

@@ -0,0 +1,129 @@
+/*
+Copyright © Brian Buller <brian@bullercodeworks.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package widgets
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell"
+)
+
+type AbsoluteLayout struct {
+	id    string
+	style tcell.Style
+
+	x, y    int
+	w, h    int
+	widgets []Widget
+	wCoords map[Widget]Coord
+
+	active  bool
+	visible bool
+
+	logger func(string)
+}
+
+func (w *AbsoluteLayout) SetLogger(l func(string)) { w.logger = l }
+func (w *AbsoluteLayout) Log(txt string) {
+	if w.logger != nil {
+		w.logger(txt)
+	}
+}
+
+func NewAbsoluteLayout(id string, s tcell.Style) *AbsoluteLayout {
+	ret := &AbsoluteLayout{style: s}
+	ret.Init(id)
+	return ret
+}
+
+func (w *AbsoluteLayout) Init(id string) {
+	w.id = id
+	w.visible = true
+	w.wCoords = make(map[Widget]Coord)
+}
+
+func (w *AbsoluteLayout) Id() string { return w.id }
+func (w *AbsoluteLayout) HandleResize(ev *tcell.EventResize) {
+	for _, wi := range w.widgets {
+		wi.HandleResize(ev)
+	}
+}
+
+func (w *AbsoluteLayout) HandleKey(ev *tcell.EventKey) bool {
+	for _, wi := range w.widgets {
+		w.Log(fmt.Sprintf("Passing key (%s) to %s", ev.Name(), wi.Id()))
+		if wi.HandleKey(ev) {
+			return true
+		}
+	}
+	return false
+}
+
+func (w *AbsoluteLayout) HandleTime(ev *tcell.EventTime) {
+	for _, wi := range w.widgets {
+		wi.HandleTime(ev)
+	}
+}
+
+func (w *AbsoluteLayout) Draw(screen tcell.Screen) {
+	if !w.visible {
+		return
+	}
+	for i := len(w.widgets) - 1; i >= 0; i-- {
+		var p Coord
+		var ok bool
+		if p, ok = w.wCoords[w.widgets[i]]; !ok {
+			// Don't know where to put this widget
+			continue
+		}
+		w.widgets[i].SetPos(p.Add(Coord{X: w.x, Y: w.y}))
+		w.widgets[i].Draw(screen)
+	}
+}
+func (w *AbsoluteLayout) Active() bool      { return w.active }
+func (w *AbsoluteLayout) SetActive(a bool)  { w.active = a }
+func (w *AbsoluteLayout) Visible() bool     { return w.visible }
+func (w *AbsoluteLayout) SetVisible(a bool) { w.visible = a }
+func (w *AbsoluteLayout) Focusable() bool   { return true }
+func (w *AbsoluteLayout) SetX(x int)        { w.x = x }
+func (w *AbsoluteLayout) SetY(y int)        { w.y = y }
+func (w *AbsoluteLayout) GetX() int         { return w.x }
+func (w *AbsoluteLayout) GetY() int         { return w.y }
+func (w *AbsoluteLayout) SetPos(c Coord)    { w.x, w.y = c.X, c.Y }
+func (w *AbsoluteLayout) GetW() int         { return w.w }
+func (w *AbsoluteLayout) GetH() int         { return w.h }
+func (w *AbsoluteLayout) SetW(wd int)       { w.w = wd }
+func (w *AbsoluteLayout) SetH(h int)        { w.h = h }
+func (w *AbsoluteLayout) SetSize(c Coord)   { w.w, w.h = c.X, c.Y }
+func (w *AbsoluteLayout) WantW() int        { return w.w }
+func (w *AbsoluteLayout) WantH() int        { return w.h }
+
+// Add a widget at x/y
+func (w *AbsoluteLayout) Add(n Widget, pos Coord) {
+	w.widgets = append(w.widgets, n)
+	w.wCoords[n] = pos
+}
+
+func (w *AbsoluteLayout) Clear() {
+	w.widgets = []Widget{}
+	w.wCoords = make(map[Widget]Coord)
+}