mirror of https://github.com/liamg/aminal.git
138 lines
3.1 KiB
Go
138 lines
3.1 KiB
Go
package gui
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import (
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"github.com/go-gl/gl/all-core/gl"
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"github.com/liamg/glfont"
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)
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type Cell struct {
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vao uint32
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vbo uint32
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cv uint32
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colourAttr uint32
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points []float32
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bgColour [3]float32
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fgColour [3]float32
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hidden bool
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r rune
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font *glfont.Font
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x float32
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y float32
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}
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func (gui *GUI) NewCell(font *glfont.Font, x float32, y float32, w float32, h float32, colourAttr uint32, bgColour [3]float32) Cell {
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cell := Cell{
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colourAttr: colourAttr,
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font: font,
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x: x + (float32(gui.width) / 2) - float32(gui.charWidth/2),
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y: float32(gui.height) - (y + (float32(gui.height) / 2)) + (gui.charHeight / 2) - (gui.verticalPadding / 2),
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}
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cell.bgColour = bgColour
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x = (x - (w / 2)) / (float32(gui.width) / 2)
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y = (y - (h / 2)) / (float32(gui.height) / 2)
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w = (w / float32(gui.width/2))
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h = (h / float32(gui.height/2))
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cell.points = []float32{
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x, y + h, 0,
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x, y, 0,
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x + w, y, 0,
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x, y + h, 0,
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x + w, y + h, 0,
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x + w, y, 0,
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}
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cell.makeVao()
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return cell
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}
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func (cell *Cell) SetRune(r rune) {
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if cell.r == r {
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return
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}
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cell.r = r
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}
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func (cell *Cell) SetFgColour(r, g, b float32) {
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if cell.fgColour[0] != r || cell.fgColour[1] != g || cell.fgColour[2] != b {
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cell.fgColour = [3]float32{r, g, b}
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}
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}
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func (cell *Cell) SetBgColour(r float32, g float32, b float32) {
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if cell.bgColour[0] == r && cell.bgColour[1] == g && cell.bgColour[2] == b {
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return
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}
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cell.bgColour = [3]float32{r, g, b}
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//cell.Clean()
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cell.makeVao()
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}
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func (cell *Cell) Clean() {
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gl.DeleteVertexArrays(1, &cell.vao)
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gl.DeleteBuffers(1, &cell.vbo)
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}
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func (cell *Cell) makeVao() {
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gl.GenBuffers(1, &cell.vbo)
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gl.BindBuffer(gl.ARRAY_BUFFER, cell.vbo)
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gl.BufferData(gl.ARRAY_BUFFER, 4*len(cell.points), gl.Ptr(cell.points), gl.STATIC_DRAW)
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gl.GenVertexArrays(1, &cell.vao)
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gl.BindVertexArray(cell.vao)
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gl.EnableVertexAttribArray(0)
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gl.BindBuffer(gl.ARRAY_BUFFER, cell.vbo)
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gl.VertexAttribPointer(0, 3, gl.FLOAT, false, 0, nil)
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// COLOUR
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gl.GenBuffers(1, &cell.cv)
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gl.BindBuffer(gl.ARRAY_BUFFER, cell.cv)
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triColor := []float32{
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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cell.bgColour[0], cell.bgColour[1], cell.bgColour[2],
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}
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gl.BufferData(gl.ARRAY_BUFFER, len(triColor)*4, gl.Ptr(triColor), gl.STATIC_DRAW)
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gl.EnableVertexAttribArray(cell.colourAttr)
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gl.VertexAttribPointer(cell.colourAttr, 3, gl.FLOAT, false, 0, gl.PtrOffset(0))
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// END COLOUR
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}
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func (cell *Cell) DrawBg() {
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if cell.hidden {
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return
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}
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gl.BindVertexArray(cell.vao)
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gl.DrawArrays(gl.TRIANGLES, 0, 6)
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}
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func (cell *Cell) DrawText() {
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if cell.hidden || cell.r == ' ' {
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return
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}
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if cell.font != nil {
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cell.font.SetColor(cell.fgColour[0], cell.fgColour[1], cell.fgColour[2], 1.0)
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cell.font.Printf(cell.x, cell.y, 1, "%s", string(cell.r))
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}
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}
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func (cell *Cell) Show() {
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cell.hidden = false
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}
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func (cell *Cell) Hide() {
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cell.hidden = true
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}
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