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tests: Add preedit callback to display preedit contents

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This commit is contained in:
Daijiro Fukuda 2022-05-22 16:51:55 +09:00
parent a0daa8801c
commit 97f52c9cf8
1 changed files with 91 additions and 2 deletions
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93
tests/input_text.c
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@ -100,6 +100,36 @@ static int fontNum = 0;
static int currentFontIndex = 0;
static int currentIMEStatus = GLFW_FALSE;
#define MAX_PREDIT_LEN 128
static char preeditBuf[MAX_PREDIT_LEN] = "";
static size_t encode_utf8(char* s, unsigned int ch)
{
size_t count = 0;
if (ch < 0x80)
s[count++] = (char) ch;
else if (ch < 0x800)
{
s[count++] = (ch >> 6) | 0xc0;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x10000)
{
s[count++] = (ch >> 12) | 0xe0;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x110000)
{
s[count++] = (ch >> 18) | 0xf0;
s[count++] = ((ch >> 12) & 0x3f) | 0x80;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
return count;
}
#if (!defined(FONTCONFIG_ENABLED) || defined(TTF_FONT_FILEPATH))
static void init_font_list()
@ -404,6 +434,19 @@ static void set_ime_stauts_labels(GLFWwindow* window, struct nk_context* nk, int
nk_value_bool(nk, "IME status", currentIMEStatus);
}
static void set_preedit_labels(GLFWwindow* window, struct nk_context* nk, int height)
{
nk_layout_row_begin(nk, NK_DYNAMIC, height, 5);
nk_layout_row_push(nk, 1.f / 3.f);
nk_label(nk, "Preedit info:", NK_TEXT_LEFT);
nk_layout_row_push(nk, 2.f / 3.f);
nk_label(nk, (const char*) preeditBuf, NK_TEXT_LEFT);
nk_layout_row_end(nk);
}
// If it is possible to take the text-cursor position calculated in `nk_do_edit` function in `deps/nuklear.h`,
// we can set preedit-cursor position more easily.
// However, there doesn't seem to be a way to do that, so this does a simplified calculation only for the end
@ -446,7 +489,7 @@ static void update_preedit_pos(GLFWwindow* window, struct nk_context* nk, struct
{
// I don't know how to get these info.
int widgetLayoutX = 10;
int widgetLayoutY = 190;
int widgetLayoutY = 220;
int preeditPosX = widgetLayoutX + lineWidth;
int preeditPosY = widgetLayoutY + totalLines * (f->height + nk->style.edit.row_padding);
@ -461,6 +504,50 @@ static void ime_callback(GLFWwindow* window)
printf("IME switched: %s\n", currentIMEStatus ? "ON" : "OFF");
}
static void preedit_callback(GLFWwindow* window, int strLength,
unsigned int* string, int blockLength,
int* blocks, int focusedBlock)
{
int blockIndex = -1, blockCount = 0;
if (strLength == 0 || blockLength == 0)
{
strcpy(preeditBuf, "(empty)");
return;
}
strcpy(preeditBuf, "");
for (int i = 0; i < strLength; i++)
{
char encoded[5] = "";
if (blockCount == 0)
{
if (blockIndex == focusedBlock)
{
if (strlen(preeditBuf) + strlen("]") < MAX_PREDIT_LEN)
strcat(preeditBuf, "]");
}
blockIndex++;
blockCount = blocks[blockIndex];
if (blockIndex == focusedBlock)
{
if (strlen(preeditBuf) + strlen("[") < MAX_PREDIT_LEN)
strcat(preeditBuf, "[");
}
}
encode_utf8(encoded, string[i]);
if (strlen(preeditBuf) + strlen(encoded) < MAX_PREDIT_LEN)
strcat(preeditBuf, encoded);
blockCount--;
}
if (blockIndex == focusedBlock)
{
if (strlen(preeditBuf) + strlen("]") < MAX_PREDIT_LEN)
strcat(preeditBuf, "]");
}
}
int main(int argc, char** argv)
{
GLFWwindow* window;
@ -486,6 +573,7 @@ int main(int argc, char** argv)
}
glfwSetIMEStatusCallback(window, ime_callback);
glfwSetPreeditCallback(window, preedit_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
@ -513,8 +601,9 @@ int main(int argc, char** argv)
set_ime_buttons(window, nk, 30);
set_preedit_cursor_edit(window, nk, 30, &isAutoUpdatingPreeditPosEnabled);
set_ime_stauts_labels(window, nk, 30);
set_preedit_labels(window, nk, 30);
nk_layout_row_dynamic(nk, height - 200, 1);
nk_layout_row_dynamic(nk, height - 250, 1);
nk_edit_string(nk, NK_EDIT_BOX, boxBuffer, &boxLen, MAX_BUFFER_LEN, nk_filter_default);
}
nk_end(nk);