211 lines
5.2 KiB
V
211 lines
5.2 KiB
V
module ttf
|
|
|
|
/**********************************************************************
|
|
*
|
|
* BMP render module utility functions
|
|
*
|
|
* Copyright (c) 2021 Dario Deledda. All rights reserved.
|
|
* Use of this source code is governed by an MIT license
|
|
* that can be found in the LICENSE file.
|
|
*
|
|
* Note:
|
|
*
|
|
* TODO:
|
|
**********************************************************************/
|
|
import math
|
|
import gg
|
|
import sokol.sgl
|
|
|
|
pub struct TTF_render_Sokol {
|
|
pub mut:
|
|
bmp &BitMap // Base bitmap render
|
|
// rendering fields
|
|
sg_img C.sg_image // sokol image
|
|
scale_reduct f32 = 2.0 // scale of the cpu texture for filtering
|
|
device_dpi int = 72 // device DPI
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Render functions
|
|
*
|
|
******************************************************************************/
|
|
fn (mut tf_skl TTF_render_Sokol) format_texture() {
|
|
tf_skl.bmp.format_texture()
|
|
}
|
|
|
|
pub fn (mut tf_skl TTF_render_Sokol) create_text(in_txt string, in_font_size f32) {
|
|
scale_reduct := tf_skl.scale_reduct
|
|
device_dpi := tf_skl.device_dpi
|
|
font_size := in_font_size //* scale_reduct
|
|
|
|
// Formula: (font_size * device dpi) / (72dpi * em_unit)
|
|
// scale := ((1.0 * devide_dpi )/ f32(72 * tf_skl.bmp.tf.units_per_em))* font_size
|
|
scale := f32(font_size * device_dpi) / f32(72 * tf_skl.bmp.tf.units_per_em)
|
|
// dprintln("Scale: $scale")
|
|
|
|
tf_skl.bmp.scale = scale * scale_reduct
|
|
w, h := tf_skl.bmp.get_bbox(in_txt)
|
|
tf_skl.bmp.width = int(w)
|
|
tf_skl.bmp.height = int((h + 8))
|
|
sz := tf_skl.bmp.width * tf_skl.bmp.height * tf_skl.bmp.bp
|
|
|
|
// RAM buffer
|
|
if sz > tf_skl.bmp.buf_size {
|
|
if sz > 0 {
|
|
free(tf_skl.bmp.buf)
|
|
}
|
|
dprintln('create_text Alloc: $sz bytes')
|
|
tf_skl.bmp.buf = malloc(sz)
|
|
tf_skl.bmp.buf_size = sz
|
|
}
|
|
|
|
tf_skl.bmp.init_filler()
|
|
|
|
// draw the text
|
|
mut y_base := int((tf_skl.bmp.tf.y_max - tf_skl.bmp.tf.y_min) * tf_skl.bmp.scale)
|
|
tf_skl.bmp.set_pos(0, y_base)
|
|
tf_skl.bmp.clear()
|
|
tf_skl.bmp.draw_text(in_txt)
|
|
tf_skl.format_texture()
|
|
}
|
|
|
|
pub fn (mut tf_skl TTF_render_Sokol) create_text_block(in_txt string, in_w int, in_h int, in_font_size f32) {
|
|
scale_reduct := tf_skl.scale_reduct
|
|
device_dpi := tf_skl.device_dpi
|
|
font_size := in_font_size //* scale_reduct
|
|
// Formula: (font_size * device dpi) / (72dpi * em_unit)
|
|
// scale := ((1.0 * devide_dpi )/ f32(72 * tf_skl.bmp.tf.units_per_em))* font_size
|
|
scale := f32(font_size * device_dpi) / f32(72 * tf_skl.bmp.tf.units_per_em)
|
|
// dprintln("Scale: $scale")
|
|
|
|
tf_skl.bmp.scale = scale * scale_reduct
|
|
w := in_w
|
|
h := in_h
|
|
tf_skl.bmp.width = int(w * scale_reduct + 0.5)
|
|
tf_skl.bmp.height = int((h + 2) * scale_reduct + 0.5)
|
|
sz := tf_skl.bmp.width * tf_skl.bmp.height * tf_skl.bmp.bp
|
|
|
|
// if true { return }
|
|
|
|
// RAM buffer
|
|
if sz > tf_skl.bmp.buf_size {
|
|
if sz > 0 {
|
|
free(tf_skl.bmp.buf)
|
|
}
|
|
dprintln('Alloc: $sz bytes')
|
|
tf_skl.bmp.buf = malloc(sz)
|
|
tf_skl.bmp.buf_size = sz
|
|
}
|
|
|
|
tf_skl.bmp.init_filler()
|
|
|
|
// draw the text
|
|
mut y_base := int((tf_skl.bmp.tf.y_max - tf_skl.bmp.tf.y_min) * tf_skl.bmp.scale)
|
|
tf_skl.bmp.set_pos(0, y_base)
|
|
tf_skl.bmp.clear()
|
|
|
|
tf_skl.bmp.draw_text_block(in_txt, x: 0, y: 0, w: w, h: h)
|
|
tf_skl.format_texture()
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Sokol Render functions
|
|
*
|
|
******************************************************************************/
|
|
pub fn (mut tf_skl TTF_render_Sokol) create_texture() {
|
|
w := tf_skl.bmp.width
|
|
h := tf_skl.bmp.height
|
|
sz := tf_skl.bmp.width * tf_skl.bmp.height * tf_skl.bmp.bp
|
|
mut img_desc := C.sg_image_desc{
|
|
width: w
|
|
height: h
|
|
num_mipmaps: 0
|
|
min_filter: .linear
|
|
mag_filter: .linear
|
|
// usage: .dynamic
|
|
wrap_u: .clamp_to_edge
|
|
wrap_v: .clamp_to_edge
|
|
label: &byte(0)
|
|
d3d11_texture: 0
|
|
}
|
|
// comment for dynamic
|
|
img_desc.content.subimage[0][0] = C.sg_subimage_content{
|
|
ptr: tf_skl.bmp.buf
|
|
size: sz
|
|
}
|
|
|
|
simg := C.sg_make_image(&img_desc)
|
|
// free(tf_skl.bmp.buf) // DONT FREE IF Dynamic
|
|
tf_skl.sg_img = simg
|
|
}
|
|
|
|
pub fn (tf_skl TTF_render_Sokol) destroy_texture() {
|
|
C.sg_destroy_image(tf_skl.sg_img)
|
|
}
|
|
|
|
// Use only if usage: .dynamic
|
|
pub fn (mut tf_skl TTF_render_Sokol) update_text_texture() {
|
|
sz := tf_skl.bmp.width * tf_skl.bmp.height * tf_skl.bmp.bp
|
|
mut tmp_sbc := C.sg_image_content{}
|
|
tmp_sbc.subimage[0][0] = C.sg_subimage_content{
|
|
ptr: tf_skl.bmp.buf
|
|
size: sz
|
|
}
|
|
C.sg_update_image(tf_skl.sg_img, &tmp_sbc)
|
|
}
|
|
|
|
pub fn (tf_skl TTF_render_Sokol) draw_text_bmp(ctx &gg.Context, x f32, y f32) {
|
|
// width := tf_skl.bmp.width >> 1
|
|
// height := tf_skl.bmp.height >> 1
|
|
sgl.push_matrix()
|
|
|
|
width := tf_skl.bmp.width / (tf_skl.scale_reduct)
|
|
height := tf_skl.bmp.height / (tf_skl.scale_reduct)
|
|
|
|
u0 := f32(0.0)
|
|
v0 := f32(0.0)
|
|
u1 := f32(1.0)
|
|
v1 := f32(1.0)
|
|
x0 := f32(0)
|
|
y0 := f32(0)
|
|
x1 := f32(width) * ctx.scale
|
|
y1 := f32(height) * ctx.scale
|
|
|
|
ca := f32(math.cos(tf_skl.bmp.angle))
|
|
sa := f32(math.sin(tf_skl.bmp.angle))
|
|
m := [
|
|
f32(ca),
|
|
-sa,
|
|
0,
|
|
0,
|
|
sa,
|
|
ca,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
1,
|
|
0,
|
|
x,
|
|
y,
|
|
0,
|
|
1,
|
|
]
|
|
sgl.mult_matrix(m)
|
|
//
|
|
sgl.load_pipeline(ctx.timage_pip)
|
|
sgl.enable_texture()
|
|
sgl.texture(tf_skl.sg_img)
|
|
sgl.begin_quads()
|
|
sgl.c4b(255, 255, 255, 255)
|
|
sgl.v2f_t2f(x0, y0, u0, v0)
|
|
sgl.v2f_t2f(x1, y0, u1, v0)
|
|
sgl.v2f_t2f(x1, y1, u1, v1)
|
|
sgl.v2f_t2f(x0, y1, u0, v1)
|
|
sgl.end()
|
|
sgl.disable_texture()
|
|
sgl.pop_matrix()
|
|
}
|