Recalculate Font on window resize
This commit is contained in:
SamratGhale
+103
-101
@@ -1,20 +1,30 @@
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package edit2d
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import "core:fmt"
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import "base:intrinsics"
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import "core:encoding/cbor"
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import b2 "vendor:box2d"
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import "base:runtime"
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/*
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import im "shared:odin-imgui"
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import "shared:odin-imgui/imgui_impl_glfw"
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import "shared:odin-imgui/imgui_impl_opengl3"
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**/
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import gl "vendor:OpenGL"
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import "vendor:glfw"
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import e2_draw "shared:Edit2D/draw"
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import e2_draw "shared:Edit2D/draw"
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import e2_glyph "shared:Edit2D/glyph"
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import "core:reflect"
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import mu "vendor:microui"
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//Only to be used inside the libarary
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__e2d_interal : struct
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{
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viewport_changed : bool
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}
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engine_state :: struct
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@@ -98,6 +108,12 @@ engine_check_types :: proc($Game: typeid)
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}
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size_callback :: proc "c" (window: glfw.WindowHandle, width, height : i32)
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{
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__e2d_interal.viewport_changed = true
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}
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/*
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This will only be called once to initilize the engine
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initilize graphics library, glfw, callbacks
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@@ -126,32 +142,8 @@ engine_init :: proc($GameType : typeid, state: ^engine_state, font_path : strin
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glfw.MakeContextCurrent(state.window)
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glfw.SwapInterval(1)
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gl.load_up_to(4, 5, glfw.gl_set_proc_address)
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im.CHECKVERSION()
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im.CreateContext()
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io := im.GetIO()
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io.ConfigFlags += {
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.NavEnableKeyboard,
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.NavEnableGamepad,
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.DpiEnableScaleFonts,
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}
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im.StyleColorsClassic()
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style := im.GetStyle()
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style.ChildBorderSize = 0.
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style.ChildRounding = 6
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style.TabRounding = 6
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style.FrameRounding = 6
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style.GrabRounding = 6
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style.WindowRounding = 6
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style.PopupRounding = 6
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imgui_impl_glfw.InitForOpenGL(state.window, true)
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imgui_impl_opengl3.Init("#version 150")
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glfw.SetWindowSizeCallback(state.window, size_callback)
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state.draw.cam = e2_draw.camera_init()
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@@ -175,33 +167,26 @@ engine_init :: proc($GameType : typeid, state: ^engine_state, font_path : strin
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}, 201, rawptr)
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//Glyph and microui
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mu.init(&state.mu_ctx)
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state.mu_ctx.style.font = cast(mu.Font)&state.draw.glyph
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state.mu_ctx.text_width = mui_text_width
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state.mu_ctx.text_height = mui_text_height
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texture_data := make([]u8, mu.DEFAULT_ATLAS_WIDTH* mu.DEFAULT_ATLAS_HEIGHT * 4)
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idx :i32 = 0
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for y in 0..<mu.DEFAULT_ATLAS_HEIGHT
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{
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//Create index
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mu.init(&state.mu_ctx)
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state.mu_ctx.style.font = cast(mu.Font)&state.draw.glyph
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state.mu_ctx.text_width = mui_text_width
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state.mu_ctx.text_height = mui_text_height
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texture_data := make([]u8, mu.DEFAULT_ATLAS_WIDTH* mu.DEFAULT_ATLAS_HEIGHT * 4)
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idx :i32 = 0
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for y in 0..<mu.DEFAULT_ATLAS_HEIGHT
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for x in 0..<mu.DEFAULT_ATLAS_WIDTH
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{
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for x in 0..<mu.DEFAULT_ATLAS_WIDTH
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{
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texture_data[idx + 0] = 255
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texture_data[idx + 1] = 255
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texture_data[idx + 2] = 255
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texture_data[idx + 3] = mu.default_atlas_alpha[idx/4]
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idx += 4
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}
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texture_data[idx + 0] = 255
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texture_data[idx + 1] = 255
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texture_data[idx + 2] = 255
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texture_data[idx + 3] = mu.default_atlas_alpha[idx/4]
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idx += 4
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}
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state.mu_tex = e2_draw.create_texture(texture_data, mu.DEFAULT_ATLAS_WIDTH, mu.DEFAULT_ATLAS_HEIGHT)
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}
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state.mu_tex = e2_draw.create_texture(texture_data, mu.DEFAULT_ATLAS_WIDTH, mu.DEFAULT_ATLAS_HEIGHT)
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}
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normalize_rect :: proc(rect : mu.Rect, size : i32) -> e2_draw.Rect
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@@ -251,78 +236,84 @@ update_frame :: proc(state: ^engine_state)
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state.width , state.height = glfw.GetFramebufferSize(state.window)
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gl.Viewport(0, 0, state.width, state.height)
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/*
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imgui_impl_opengl3.NewFrame()
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imgui_impl_glfw.NewFrame()
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im.NewFrame()
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*/
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}
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end_frame :: proc(state: ^engine_state)
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{
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/*
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im.Render()
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imgui_impl_opengl3.RenderDrawData(im.GetDrawData())
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*/
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//Microui
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fb_x, fb_y := glfw.GetFramebufferSize(state.window)
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state.draw.glyph.atlas_width = fb_x
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state.draw.glyph.atlas_height = fb_y
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cmd: ^mu.Command
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draw := &state.draw
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for mu.next_command(&state.mu_ctx, &cmd)
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{
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cmd: ^mu.Command
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draw := &state.draw
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for mu.next_command(&state.mu_ctx, &cmd)
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{
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#partial switch c in cmd.variant{
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case ^mu.Command_Text:
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{
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color := c.color
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append(&draw.texts, e2_draw.TextItem{c.str, {f32(c.pos.x), f32(c.pos.y)}, {c.color.r, color.g, color.b, color.a}})
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}
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case ^mu.Command_Rect:
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{
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rect := c.rect
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pos :[2]f32= {f32(rect.x), f32(rect.y)}
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wh :[2]f32= {f32(rect.w), f32(rect.h)}
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w, h := wh.x, wh.y
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points : [4][2]f32 = {
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{pos.x + w, pos.y},
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{pos.x, pos.y},
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{pos.x, pos.y + h},
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{pos.x + w, pos.y + h},
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}
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for &p, i in &points do points[i] = e2_draw.camera_convert_screen_to_world(&draw.cam, p)
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color := c.color
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//hex_color := e2_draw.make_hex_color({color.r, color.g, color.b, color.a})
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e2_draw.solid_polygon_add(&draw.polygons, {q = e2_draw.Rot{c = 1}}, &points[0], 4, 0.01, transmute([4]u8)color)
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}
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case ^mu.Command_Clip:
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{
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rect := c.rect
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gl.Scissor(rect.x, state.height - (rect.y + rect.h), rect.w, rect.h)
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}
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case ^mu.Command_Icon:{
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rect := mu.default_atlas[c.id]
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append(&draw.textures.textures, e2_draw.TextureData{
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texture_id = state.mu_tex,
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src_rect = normalize_rect(rect, mu.DEFAULT_ATLAS_WIDTH),
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dst_rect = e2_draw.Rect{f32(c.rect.x), f32(c.rect.y), f32(rect.w), f32(rect.h)},
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})
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}
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#partial switch c in cmd.variant{
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case ^mu.Command_Text:
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{
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color := c.color
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append(&draw.texts, e2_draw.TextItem{c.str, {f32(c.pos.x), f32(c.pos.y)}, {c.color.r, color.g, color.b, color.a}})
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}
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case ^mu.Command_Rect:
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{
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rect := c.rect
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pos :[2]f32= {f32(rect.x), f32(rect.y)}
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wh :[2]f32= {f32(rect.w), f32(rect.h)}
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w, h := wh.x, wh.y
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points : [4][2]f32 = {
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{pos.x + w, pos.y},
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{pos.x, pos.y},
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{pos.x, pos.y + h},
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{pos.x + w, pos.y + h},
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}
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for &p, i in &points do points[i] = e2_draw.camera_convert_screen_to_world(&draw.cam, p)
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color := c.color
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e2_draw.solid_polygon_add(&draw.polygons, {q = e2_draw.Rot{c = 1}}, &points[0], 4, 0.01, transmute([4]u8)color)
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}
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case ^mu.Command_Clip:
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{
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rect := c.rect
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gl.Scissor(rect.x, state.height - (rect.y + rect.h), rect.w, rect.h)
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}
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case ^mu.Command_Icon:{
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rect := mu.default_atlas[c.id]
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append(&draw.textures.textures, e2_draw.TextureData{
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texture_id = state.mu_tex,
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src_rect = normalize_rect(rect, mu.DEFAULT_ATLAS_WIDTH),
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dst_rect = e2_draw.Rect{f32(c.rect.x), f32(c.rect.y), f32(rect.w), f32(rect.h)},
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})
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}
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}
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}
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glfw.SwapBuffers(state.window)
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__e2d_interal.viewport_changed = false
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}
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cleanup :: proc(state: ^engine_state)
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{
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imgui_impl_opengl3.Shutdown()
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imgui_impl_glfw.Shutdown()
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//imgui_impl_opengl3.Shutdown()
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//imgui_impl_glfw.Shutdown()
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}
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engine_should_close :: proc(state : ^engine_state) -> b32
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@@ -367,6 +358,17 @@ is_key_released :: #force_inline proc(state: ^engine_state, key : i32) -> bool{
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draw_flush :: proc(d: ^e2_draw.Draw)
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{
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e2_draw.draw_flush(d)
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if __e2d_interal.viewport_changed
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{
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d.glyph.atlas_width = d.cam.width
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d.glyph.atlas_height = d.cam.height
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d.glyph.font_size_pt = 9
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d.glyph.width = d.cam.width
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d.glyph.height = d.cam.height
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e2_glyph.glyph_init(&d.glyph, d.font_path)
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}
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e2_draw.draw_flush(d, __e2d_interal.viewport_changed)
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}
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